Abstract Roundabouts have become increasingly popular in recent years as an innovative operational and safety solution at both low volume and high volume intersections. Roundabouts have a number of advantages over traffic signals depending on the conditions. They reduce the severity of crashes since head-on and right-angle conflicts are nearly eliminated. They reduce through traffic speeds to provide a “calmer” roadway environment. This study appraised Airport roundabout on the Antoa Road in Kumasi, Ghana using micro simulation model. Traffic and geometric data were collected on the field. The analysis revealed that Airport roundabout was operating at a level of service F, which represented worst conditions. Signalized intersection with 4 approach lanes on the two principal arterials was proposed to control all the movements. Exclusive pedestrian phases were proposed to protect pedestrians. Keywords: Appraisal, Airport roundabout, Capacity analysis, Antoa Road.
Capacity and performance analysis of suame roundabout, kumasi ghanaeSAT Journals
Roundabouts are an increasingly popular alternative to traffic signals for intersection control in the United States. Roundabouts have
a number of advantages over traffic signals depending on the conditions. They reduce the severity of crashes since head-on and rightangle
conflicts are nearly eliminated. They reduce through traffic speeds to provide a “calmer” roadway environment. They may
consume less land area since turn pocket lanes are not needed and also have lower energy and maintenance costs.
This study analyzed capacity and performance of Suame roundabout in Kumasi, Ghana. Traffic and geometric data were collected on
the field. The analysis revealed that Suame roundabout was operating at a level of service F, which represented worst conditions.
Signalized intersection with 5 approach lanes was proposed to control all the movements. Exclusive pedestrian phases were
proposed to protect pedestrians.
Index Terms: Performance analysis, Suame roundabout, Capacity analysis, Transportation network pe
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
The spectacular growth of the automobile as one of the most convenient modes of travel has brought in its wake frustrating problems of parking, accidents, delay, congestion, etc. It is no longer sufficient to build roads of adequate structural strength to cater to the needs of vehicles, but it is equally important that the safe, efficient and comfortable movement of traffic and other road user is ensured on these roads. Highway intersections are nodes of road networks and accident - prone locations. They are the places where vehicles coming from different approaches and moving towards different directions interact and conflict with each other. Due to the conflicts from all users, more traffic crashes could happen at unsignalized intersection as compared with roadway segments. This study is fully based on the existing conditions of unsignalized intersection, including geometric design, sight distance, traffic control devices etc. The problems of parking, accidents and delay are also prevailing in the area under our study i.e. intersection at 26th mile. The intersection is an unsignalized one and therefore, the chances of accidents during the peak hours are very high. Since, it is a meeting point of a national highway and a state highway, the variation in the design speed of both roads also interrupts the traffic flow. Our study on the intersection at 26th mile mainly aims at improving the geometrical as well as the safety features of the intersection like accident control by signal installation, incorporation of proper sight distances, uninterrupted traffic flow without causing crashes, delay, etc.
THE INFLUENCE OF LAND USE AND TRAFFIC FLOW TO THE PERFORMANCE OF THE ROAD C...IAEME Publication
This paper presents the results of a study of roads performance which is influenced by existing traffic flow and land use along the roads corridors. A model approachto know the influence of traffic flow and land use on the performance of thecorridors ofManado-Bitungin Indonesia,is using Structural EquationModeling (SEM). The results of the study showed that the performance of the corridor of the road Manado-BitungModel with the approach of SEMis the model fit based on the criteria of Goodness of Fit (GoF). Aspect of traffic flow and land use provide the greatest impact on the performance of the corridor roads of Manado-Bitungwith value of 0.591 and 0.400 respectively. Meanwhile, the transportation systemand transportation users did not give any direct impact to the performance of the corridor.On the other hand, transportation system gave the direct impact to transportation users (0.657), the land use give direct impact to the traffic flow (0.644)and the transportation users in fact gave direct impact to the traffic flow (0.181).
This document discusses traffic characteristics and engineering. It defines traffic engineering as dealing with planning and designing streets and highways for safe, efficient traffic flow. Road users and their physical, mental, psychological characteristics are examined, as well as vehicles' static properties like weight and dimensions, and dynamic properties like speed and braking. Traffic surveys study these characteristics to determine road geometry and controls. Perception, intellect, emotion and volition times that make up a driver's total reaction time are also outlined.
The document analyzes the site context and visual quality of a neighborhood. It includes maps and images showing the existing zoning, pedestrian walkways, outdoor spaces like a pavilion and amphitheater, and staircases connecting different levels. These features influence pedestrian traffic and how people access and use the various spaces within the site.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Capacity and performance analysis of suame roundabout, kumasi ghanaeSAT Journals
Roundabouts are an increasingly popular alternative to traffic signals for intersection control in the United States. Roundabouts have
a number of advantages over traffic signals depending on the conditions. They reduce the severity of crashes since head-on and rightangle
conflicts are nearly eliminated. They reduce through traffic speeds to provide a “calmer” roadway environment. They may
consume less land area since turn pocket lanes are not needed and also have lower energy and maintenance costs.
This study analyzed capacity and performance of Suame roundabout in Kumasi, Ghana. Traffic and geometric data were collected on
the field. The analysis revealed that Suame roundabout was operating at a level of service F, which represented worst conditions.
Signalized intersection with 5 approach lanes was proposed to control all the movements. Exclusive pedestrian phases were
proposed to protect pedestrians.
Index Terms: Performance analysis, Suame roundabout, Capacity analysis, Transportation network pe
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
The spectacular growth of the automobile as one of the most convenient modes of travel has brought in its wake frustrating problems of parking, accidents, delay, congestion, etc. It is no longer sufficient to build roads of adequate structural strength to cater to the needs of vehicles, but it is equally important that the safe, efficient and comfortable movement of traffic and other road user is ensured on these roads. Highway intersections are nodes of road networks and accident - prone locations. They are the places where vehicles coming from different approaches and moving towards different directions interact and conflict with each other. Due to the conflicts from all users, more traffic crashes could happen at unsignalized intersection as compared with roadway segments. This study is fully based on the existing conditions of unsignalized intersection, including geometric design, sight distance, traffic control devices etc. The problems of parking, accidents and delay are also prevailing in the area under our study i.e. intersection at 26th mile. The intersection is an unsignalized one and therefore, the chances of accidents during the peak hours are very high. Since, it is a meeting point of a national highway and a state highway, the variation in the design speed of both roads also interrupts the traffic flow. Our study on the intersection at 26th mile mainly aims at improving the geometrical as well as the safety features of the intersection like accident control by signal installation, incorporation of proper sight distances, uninterrupted traffic flow without causing crashes, delay, etc.
THE INFLUENCE OF LAND USE AND TRAFFIC FLOW TO THE PERFORMANCE OF THE ROAD C...IAEME Publication
This paper presents the results of a study of roads performance which is influenced by existing traffic flow and land use along the roads corridors. A model approachto know the influence of traffic flow and land use on the performance of thecorridors ofManado-Bitungin Indonesia,is using Structural EquationModeling (SEM). The results of the study showed that the performance of the corridor of the road Manado-BitungModel with the approach of SEMis the model fit based on the criteria of Goodness of Fit (GoF). Aspect of traffic flow and land use provide the greatest impact on the performance of the corridor roads of Manado-Bitungwith value of 0.591 and 0.400 respectively. Meanwhile, the transportation systemand transportation users did not give any direct impact to the performance of the corridor.On the other hand, transportation system gave the direct impact to transportation users (0.657), the land use give direct impact to the traffic flow (0.644)and the transportation users in fact gave direct impact to the traffic flow (0.181).
This document discusses traffic characteristics and engineering. It defines traffic engineering as dealing with planning and designing streets and highways for safe, efficient traffic flow. Road users and their physical, mental, psychological characteristics are examined, as well as vehicles' static properties like weight and dimensions, and dynamic properties like speed and braking. Traffic surveys study these characteristics to determine road geometry and controls. Perception, intellect, emotion and volition times that make up a driver's total reaction time are also outlined.
The document analyzes the site context and visual quality of a neighborhood. It includes maps and images showing the existing zoning, pedestrian walkways, outdoor spaces like a pavilion and amphitheater, and staircases connecting different levels. These features influence pedestrian traffic and how people access and use the various spaces within the site.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Performance evaluation of santasi roundabout, kumasi ghana using micro simula...eSAT Journals
Abstract Roundabouts are an increasingly popular alternative to traffic signals for intersection control in the United States. Roundabouts have a number of advantages over traffic signals depending on the conditions. They reduce the severity of crashes since head-on and right-angle conflicts are nearly eliminated. They reduce through traffic speeds to provide a “calmer” roadway environment. They may consume less land area since turn pocket lanes are not needed and also have lower energy and maintenance costs. This study evaluated performance of Santasi roundabout in Kumasi, Ghana using micro simulation model. Traffic and geometric data were collected on the field. The analysis revealed that Santasi roundabout was operating at a level of service F, which represented worst conditions. Signalized intersection with 4 approach lanes was proposed to control all the movements. Exclusive pedestrian phases were proposed to protect pedestrians. Index Terms: Performance evaluation, Santasi roundabout, Capacity analysis, Transportation network performance
City areas have been experiencing phenomenal augmentation of automobiles all
the way through expedient mode of trek. Though the intensification of the city is hasty,
both in population and extent, the road association and other transportation amenities
have not followed the tempo with the increasing hassle. The flare-up of private vehicle
tenure especially two wheelers and four wheelers sundry with ample volume of
prompt moving vehicle like lorry in the passage stream results in chaotic stipulation.
While long term trial like vehicle defiant, endorsement of public convey, etc., may
relieve the road congestion to a superior extent, the abrupt measures like segregating
and diverting the traffic is of vital significance. At this stage, area traffic managing
comes in versatile to alleviate the clogging and to perk up the traffic flow. In the
present study an endeavor has been made to devise area traffic management
strategies for Thiruvanmiyur – L B Road, Chennai fork. Traffic studies were carried
out to indentify the problems. Instantly traffic is very high compared to other whirling
whereabouts in all the arms. Speed diminution is substantial in all the directions. This
was noted and recommended to the authorities to construct an underpass tunnel along
the fork to ease the traffic congestion.
Traffic Engineering, PPT Based On Unit 1 (Fundamentals of Traffic Engg.)
In this PPT you Can studied about details of traffic engg, Characteristics , and others fundamentals of Road.
By- Prof K.S.Somase
(Assistant professor of Gurukul Education society's Institute of engineering and technology, Nandgaon
Urban Transportation Systems: Redesigning Main Street Julianne Crawford
This document provides a report on redesigning a 0.4 mile section of Main Street between Cambridge Street and University Boulevard in Houston. It seeks to address traffic congestion issues on this stretch caused by high traffic volumes, numerous intersections and parking garage exits. The report analyzes existing traffic flow problems at each of the 4 intersections along Main Street. It also examines the impact of the 6 parking garage exits on the section, which exacerbate congestion. Other factors like bus routes and crossing guards are also considered. The report proposes and evaluates options to redesign elements like intersections and exits to improve traffic flow through the area without needing external traffic control.
This document provides an overview of transportation engineering, including the objectives of the course and various modes of transportation. It describes the main modes as road, rail, maritime, air, and pipelines. It also defines a transportation system as consisting of fixed facilities, flow entities, and a control system. Transportation planning is discussed as a process involving survey, analysis, forecasting, evaluation, adoption, implementation and ongoing studies to develop an efficient system.
10-Intersection Control ( Transportation and Traffic Engineering Dr. Sheriff ...Hossam Shafiq I
The document discusses different types of traffic control devices used to regulate vehicle and pedestrian traffic. It describes traffic markings like longitudinal lines that delineate lanes and indicate whether passing is allowed. It also covers traffic signs that regulate movements, warn of hazards, and provide guidance to drivers. Common shapes and colors for signs are outlined. Finally, it discusses traffic signals and their role in controlling intersections.
design of saperate lane for ambulance at high intensity traffic zone ElbichAkhtarkhan
data analysis, traffic volume studies, parking studies, separate lane for ambulance, data collection, geometric design, lane design using auto cad, traffic safety and public coordination, advantages and disadvantages
PLANNING FOR FACILITY NEEDS IN TRAIN STATION BASED ON COMPARISON OF CONNECTIN...IAEME Publication
The main objective of this research is to know the comparison of the use of mode as a reference in developing the type of facility needed at the train station. Planning for the preparation of these needs can be done by means of an interview survey for passengers on the Surabaya-Lamongan (SULAM) commuter train in Lamongan-Surabaya on weekdays. In some modes, like motorbikes and cars, they are still classified again. For example, motorbike use is divided into several categories, namely: private vehicles (delivered, carried alone), online services, and traditional gojek. In the use of cars also divided into several categories, namely: Private Vehicles (delivered, carried alone), online services, and conventional taxi. The categories in both types of modes are gap analysis of this study. The benefit of being made a category for both types of modes is to plan the type of facility needed for vehicles to stop both inside and outside the train station. The type of facility type planning, is a renewal of this research, because previous research was limited to the comparison of vehicles used. Another benefit of this research is that it can produce new research to plan simulation of vehicle parking capacity
At present, there are many problems being faced by road users in urban area with limitation of land space and traffic congestion, pedestrian are one of the most vulnerable entities of the transportation system It is observed that there is an increase in number of conflicts between pedestrian and the vehicles in the city. In order to mitigate the conflicts between vehicular traffic and pedestrian traffic an attempt is made to provide a Skywalk. The present study involves the Opinion survey of pedestrians, Mid-block traffic count, pedestrian count were carried out for Ashoka road on weekdays and weekends. From the opinion survey, traffic count and pedestrian counts we can conclude that there is a need to construct Skywalk to reduce the pedestrian accidents rates on Ashoka road.
The document summarizes security operations at Universitas Indonesia. It discusses:
1) The organizational structure of UPT PLK UI, which is headed by a provost and has units for operations, territorial security, administration and logistics.
2) Training that security personnel receive in areas like first aid, firefighting, drug prevention and more.
3) Regulations regarding security, traffic and public order on campus.
4) Challenges on campus like traffic violations, crime and potential radicalism that security addresses.
IRJET- Intelligent Overloading Prevention System in TrucksIRJET Journal
This document summarizes an intelligent system to prevent overloading in trucks. The system uses sensors to detect when a truck's load exceeds a preset limit. It then alerts the driver with a buzzer and light. If the overloaded truck approaches an enforcement checkpoint, a receiver detects the checkpoint's signal and activates a siren to alert authorities. Authorities can also stop an overloaded truck remotely if the driver does not stop. The system aims to reduce road damage from overloaded trucks and improve safety by automatically enforcing load limits.
Electric cable car project (Telepherique)Tamim kbarh
The document provides details of a feasibility study for an electric cable car project in Lattakia, Syria. It outlines the service which would transport tourists along a 6.5 km route between Alpedrosah beach and Kassab mountain within 20-25 minutes. It discusses the market environment, competition, technology requirements, and business model including stakeholders, legal form, and profit goals. The project aims to attract domestic and foreign tourists and stimulate tourism and national income through this new transportation service and associated facilities.
IRJET- Identification of Accident Black Spots: Jalgaon To BhusawalIRJET Journal
This document discusses the identification of accident black spots on National Highway 6 from Jalgaon to Bhusawal in Maharashtra, India. The researchers collected accident data from police stations along the 21 km stretch from 2014-2017. They analyzed the data to identify seven black spots with the highest number of accidents. The maximum fatal accidents occurred at Godavari College of Engineering, while the maximum injuries occurred at Jakat Naka. The researchers suggested remedial measures like installing speed breakers, traffic signals, road markings, and guard rails to reduce accidents at the identified black spots.
This report summarizes a road accident study conducted at an intersection in New Delhi, India. A rear-end collision occurred between a Honda City and Hyundai i10 due to faulty brakes on the Honda. The accident caused damages of Rs. 75,000 and Rs. 35,000 respectively but no injuries. Remedial steps taken included improving signage, reducing speeds, and prohibiting turns at the intersection. The conclusion emphasizes inexperience as a contributing factor in provisional license holders' high crash rates and stresses avoiding risky behaviors like tailgating and speeding.
Road accident and student's protest at Bangladesh sanjana mun
The document discusses road accidents in Bangladesh and student protests over recent accidents. It provides background on road accidents, detailing a recent accident that killed two students. It then summarizes the student protests over this accident, noting they blocked major roads for hours with nine demands, including capital punishment for reckless drivers and government compensation for families of students killed in accidents.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IRJET- Improvement of Traffic Congestion on Kollam Bypass(Ayathil-Kallumt...IRJET Journal
This document examines traffic congestion at two junctions on the Kollam bypass in Kerala, India: Ayathil junction and Kallumthazham junction. Field studies were conducted to analyze the signal systems, measure traffic volumes, and determine peak traffic hours. The studies found improper signal timing, lack of road width, and improper vehicle parking contribute to congestion. Various remedial measures are proposed, including widening the road at Ayathil junction and installing a roundabout at Kallumthazham junction.
TRAFFIC ANALYSIS AND DESIGN OF FLYOVER AT PERUMBAVOOR SIGNALIRJET Journal
1) The document discusses a proposed flyover at a signalized intersection in Perumbavoor, India to address traffic congestion issues.
2) Traffic volume data was collected manually at the intersection and converted to passenger car units (PCU). The road with the highest volume was identified.
3) Field measurements of the intersection were taken using a total station. A flyover was proposed as the maximum volume a roundabout can handle was exceeded.
4) A 2D and 3D design of the proposed 580.5m flyover was developed in AutoCAD and Revit based on survey data and design standards. The flyover is expected to significantly improve traffic flow at the intersection.
Simulation of pedestrian at intersection in urban congested areaeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Design of traffic signal on NH-12 near Barkatullah University, Bhopal Distric...IRJET Journal
This document summarizes a study on designing traffic signals on NH-12 near Barkatullah University in Bhopal, India. It begins with an abstract describing the growth of traffic in major towns due to industrialization and urbanization. The objectives of the study are to minimize delays at intersections, improve traffic flow, and enhance the level of service. Existing traffic volumes were measured using manual counts, and signals were designed using the Webster and two-phase signal methods. Key findings include calculated passenger car units per hour, saturation flow rates for different lane widths, and cycle times determined using the Webster method to minimize total vehicle delay. The study methodology involved manual traffic counts, conversion to passenger car units, and signal design using two-phase
Performance evaluation of santasi roundabout, kumasi ghana using micro simula...eSAT Journals
Abstract Roundabouts are an increasingly popular alternative to traffic signals for intersection control in the United States. Roundabouts have a number of advantages over traffic signals depending on the conditions. They reduce the severity of crashes since head-on and right-angle conflicts are nearly eliminated. They reduce through traffic speeds to provide a “calmer” roadway environment. They may consume less land area since turn pocket lanes are not needed and also have lower energy and maintenance costs. This study evaluated performance of Santasi roundabout in Kumasi, Ghana using micro simulation model. Traffic and geometric data were collected on the field. The analysis revealed that Santasi roundabout was operating at a level of service F, which represented worst conditions. Signalized intersection with 4 approach lanes was proposed to control all the movements. Exclusive pedestrian phases were proposed to protect pedestrians. Index Terms: Performance evaluation, Santasi roundabout, Capacity analysis, Transportation network performance
City areas have been experiencing phenomenal augmentation of automobiles all
the way through expedient mode of trek. Though the intensification of the city is hasty,
both in population and extent, the road association and other transportation amenities
have not followed the tempo with the increasing hassle. The flare-up of private vehicle
tenure especially two wheelers and four wheelers sundry with ample volume of
prompt moving vehicle like lorry in the passage stream results in chaotic stipulation.
While long term trial like vehicle defiant, endorsement of public convey, etc., may
relieve the road congestion to a superior extent, the abrupt measures like segregating
and diverting the traffic is of vital significance. At this stage, area traffic managing
comes in versatile to alleviate the clogging and to perk up the traffic flow. In the
present study an endeavor has been made to devise area traffic management
strategies for Thiruvanmiyur – L B Road, Chennai fork. Traffic studies were carried
out to indentify the problems. Instantly traffic is very high compared to other whirling
whereabouts in all the arms. Speed diminution is substantial in all the directions. This
was noted and recommended to the authorities to construct an underpass tunnel along
the fork to ease the traffic congestion.
Traffic Engineering, PPT Based On Unit 1 (Fundamentals of Traffic Engg.)
In this PPT you Can studied about details of traffic engg, Characteristics , and others fundamentals of Road.
By- Prof K.S.Somase
(Assistant professor of Gurukul Education society's Institute of engineering and technology, Nandgaon
Urban Transportation Systems: Redesigning Main Street Julianne Crawford
This document provides a report on redesigning a 0.4 mile section of Main Street between Cambridge Street and University Boulevard in Houston. It seeks to address traffic congestion issues on this stretch caused by high traffic volumes, numerous intersections and parking garage exits. The report analyzes existing traffic flow problems at each of the 4 intersections along Main Street. It also examines the impact of the 6 parking garage exits on the section, which exacerbate congestion. Other factors like bus routes and crossing guards are also considered. The report proposes and evaluates options to redesign elements like intersections and exits to improve traffic flow through the area without needing external traffic control.
This document provides an overview of transportation engineering, including the objectives of the course and various modes of transportation. It describes the main modes as road, rail, maritime, air, and pipelines. It also defines a transportation system as consisting of fixed facilities, flow entities, and a control system. Transportation planning is discussed as a process involving survey, analysis, forecasting, evaluation, adoption, implementation and ongoing studies to develop an efficient system.
10-Intersection Control ( Transportation and Traffic Engineering Dr. Sheriff ...Hossam Shafiq I
The document discusses different types of traffic control devices used to regulate vehicle and pedestrian traffic. It describes traffic markings like longitudinal lines that delineate lanes and indicate whether passing is allowed. It also covers traffic signs that regulate movements, warn of hazards, and provide guidance to drivers. Common shapes and colors for signs are outlined. Finally, it discusses traffic signals and their role in controlling intersections.
design of saperate lane for ambulance at high intensity traffic zone ElbichAkhtarkhan
data analysis, traffic volume studies, parking studies, separate lane for ambulance, data collection, geometric design, lane design using auto cad, traffic safety and public coordination, advantages and disadvantages
PLANNING FOR FACILITY NEEDS IN TRAIN STATION BASED ON COMPARISON OF CONNECTIN...IAEME Publication
The main objective of this research is to know the comparison of the use of mode as a reference in developing the type of facility needed at the train station. Planning for the preparation of these needs can be done by means of an interview survey for passengers on the Surabaya-Lamongan (SULAM) commuter train in Lamongan-Surabaya on weekdays. In some modes, like motorbikes and cars, they are still classified again. For example, motorbike use is divided into several categories, namely: private vehicles (delivered, carried alone), online services, and traditional gojek. In the use of cars also divided into several categories, namely: Private Vehicles (delivered, carried alone), online services, and conventional taxi. The categories in both types of modes are gap analysis of this study. The benefit of being made a category for both types of modes is to plan the type of facility needed for vehicles to stop both inside and outside the train station. The type of facility type planning, is a renewal of this research, because previous research was limited to the comparison of vehicles used. Another benefit of this research is that it can produce new research to plan simulation of vehicle parking capacity
At present, there are many problems being faced by road users in urban area with limitation of land space and traffic congestion, pedestrian are one of the most vulnerable entities of the transportation system It is observed that there is an increase in number of conflicts between pedestrian and the vehicles in the city. In order to mitigate the conflicts between vehicular traffic and pedestrian traffic an attempt is made to provide a Skywalk. The present study involves the Opinion survey of pedestrians, Mid-block traffic count, pedestrian count were carried out for Ashoka road on weekdays and weekends. From the opinion survey, traffic count and pedestrian counts we can conclude that there is a need to construct Skywalk to reduce the pedestrian accidents rates on Ashoka road.
The document summarizes security operations at Universitas Indonesia. It discusses:
1) The organizational structure of UPT PLK UI, which is headed by a provost and has units for operations, territorial security, administration and logistics.
2) Training that security personnel receive in areas like first aid, firefighting, drug prevention and more.
3) Regulations regarding security, traffic and public order on campus.
4) Challenges on campus like traffic violations, crime and potential radicalism that security addresses.
IRJET- Intelligent Overloading Prevention System in TrucksIRJET Journal
This document summarizes an intelligent system to prevent overloading in trucks. The system uses sensors to detect when a truck's load exceeds a preset limit. It then alerts the driver with a buzzer and light. If the overloaded truck approaches an enforcement checkpoint, a receiver detects the checkpoint's signal and activates a siren to alert authorities. Authorities can also stop an overloaded truck remotely if the driver does not stop. The system aims to reduce road damage from overloaded trucks and improve safety by automatically enforcing load limits.
Electric cable car project (Telepherique)Tamim kbarh
The document provides details of a feasibility study for an electric cable car project in Lattakia, Syria. It outlines the service which would transport tourists along a 6.5 km route between Alpedrosah beach and Kassab mountain within 20-25 minutes. It discusses the market environment, competition, technology requirements, and business model including stakeholders, legal form, and profit goals. The project aims to attract domestic and foreign tourists and stimulate tourism and national income through this new transportation service and associated facilities.
IRJET- Identification of Accident Black Spots: Jalgaon To BhusawalIRJET Journal
This document discusses the identification of accident black spots on National Highway 6 from Jalgaon to Bhusawal in Maharashtra, India. The researchers collected accident data from police stations along the 21 km stretch from 2014-2017. They analyzed the data to identify seven black spots with the highest number of accidents. The maximum fatal accidents occurred at Godavari College of Engineering, while the maximum injuries occurred at Jakat Naka. The researchers suggested remedial measures like installing speed breakers, traffic signals, road markings, and guard rails to reduce accidents at the identified black spots.
This report summarizes a road accident study conducted at an intersection in New Delhi, India. A rear-end collision occurred between a Honda City and Hyundai i10 due to faulty brakes on the Honda. The accident caused damages of Rs. 75,000 and Rs. 35,000 respectively but no injuries. Remedial steps taken included improving signage, reducing speeds, and prohibiting turns at the intersection. The conclusion emphasizes inexperience as a contributing factor in provisional license holders' high crash rates and stresses avoiding risky behaviors like tailgating and speeding.
Road accident and student's protest at Bangladesh sanjana mun
The document discusses road accidents in Bangladesh and student protests over recent accidents. It provides background on road accidents, detailing a recent accident that killed two students. It then summarizes the student protests over this accident, noting they blocked major roads for hours with nine demands, including capital punishment for reckless drivers and government compensation for families of students killed in accidents.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
IRJET- Improvement of Traffic Congestion on Kollam Bypass(Ayathil-Kallumt...IRJET Journal
This document examines traffic congestion at two junctions on the Kollam bypass in Kerala, India: Ayathil junction and Kallumthazham junction. Field studies were conducted to analyze the signal systems, measure traffic volumes, and determine peak traffic hours. The studies found improper signal timing, lack of road width, and improper vehicle parking contribute to congestion. Various remedial measures are proposed, including widening the road at Ayathil junction and installing a roundabout at Kallumthazham junction.
TRAFFIC ANALYSIS AND DESIGN OF FLYOVER AT PERUMBAVOOR SIGNALIRJET Journal
1) The document discusses a proposed flyover at a signalized intersection in Perumbavoor, India to address traffic congestion issues.
2) Traffic volume data was collected manually at the intersection and converted to passenger car units (PCU). The road with the highest volume was identified.
3) Field measurements of the intersection were taken using a total station. A flyover was proposed as the maximum volume a roundabout can handle was exceeded.
4) A 2D and 3D design of the proposed 580.5m flyover was developed in AutoCAD and Revit based on survey data and design standards. The flyover is expected to significantly improve traffic flow at the intersection.
Simulation of pedestrian at intersection in urban congested areaeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Design of traffic signal on NH-12 near Barkatullah University, Bhopal Distric...IRJET Journal
This document summarizes a study on designing traffic signals on NH-12 near Barkatullah University in Bhopal, India. It begins with an abstract describing the growth of traffic in major towns due to industrialization and urbanization. The objectives of the study are to minimize delays at intersections, improve traffic flow, and enhance the level of service. Existing traffic volumes were measured using manual counts, and signals were designed using the Webster and two-phase signal methods. Key findings include calculated passenger car units per hour, saturation flow rates for different lane widths, and cycle times determined using the Webster method to minimize total vehicle delay. The study methodology involved manual traffic counts, conversion to passenger car units, and signal design using two-phase
The document summarizes a study on rehabilitating an 8 km section of the Altaji-Baghdad highway in Iraq. Laboratory and field testing was conducted to determine the existing pavement conditions and traffic volumes. Various types of failures like rutting, cracking, and potholes were found. An equivalent single axle load was calculated based on traffic data and used to determine the required overlay thickness according to the Asphalt Institute Manual. The recommended rehabilitation plan involves scraping and cleaning rutted areas, constructing 50mm and 55mm asphalt layers, and a 10-15cm subbase layer to increase the highway's service life and capacity.
Identification of vehicular growth and its management on nh 202 in ranga redd...EditorIJAERD
This document summarizes a study on identifying vehicular growth and its management on NH-202 in Ranga Reddy District, India. Detailed traffic surveys were conducted on NH-202 and other major roads to assess baseline traffic characteristics. The surveys found high volumes of goods and passenger vehicles. The objectives of the study were to determine existing vehicular growth, pavement conditions for widening the single lane to double lane, equivalent single axle loads, and material selection and reuse for pavement construction. Traffic data analysis provided inputs for highway design, junction design, pavement design, and environmental impact assessment to manage the identified vehicular growth on NH-202.
IRJET- Traffic Congestion Analysis: A Case Study of Kacherithazham -Muvattupu...IRJET Journal
This document analyzes traffic congestion on the Kacherithazham-Muvattupuzha Road in India. Traffic surveys were conducted during morning, evening, and afternoon peak hours to determine traffic volumes, speeds, and delays. The highest traffic volume of 2584 passenger car units per hour was observed from 4-5 PM. Speed studies found the average speed during this period was 5.38 km/hr with 1.1 minutes of stopped delay. To address the congestion, the document recommends widening the road, constructing a bypass, relocating a bus stop, and providing more parking. The analysis concludes the current roadway is congested based on a volume/capacity ratio over 1 and suggests these re
Study the Effects of Traffic Situation on Driver’s Mood and Root Choice Decis...ijtsrd
This document summarizes a research study that analyzed how traffic situations affect drivers' moods and route choice decisions in commercial areas. Specifically, it used a traffic analysis software to count vehicles on a broad lane and service lane over time. It found that traffic peaks during rush hours affected both lanes similarly. Increased traffic and longer traffic light wait times encouraged drivers to use the alternate service lane, increasing congestion there and accident risk. The key finding was that longer traffic light wait times were the most important factor influencing drivers' decisions to use the service lane. Reducing wait times could impact typical use of the broad and service lane and improve overall traffic management.
IRJET- Feasibility Check and Analysis of a Flyover Over a Railway CrossIRJET Journal
This document discusses the feasibility of constructing a flyover over a railway crossing in Guruvayoor, India to reduce traffic congestion. Questionnaire and traffic surveys were conducted to analyze the need for the flyover. The flyover design was modeled and analyzed in SAP2000 software. Deflections and stresses were found to be within allowable limits. The flyover was concluded to be a feasible solution that would provide an alternative route and reduce traffic issues caused by trains at the crossing.
Road Safety Auditing of Koratty IntersectionIRJET Journal
This document summarizes a study that conducted a road safety audit of the Koratty intersection located on NH544 in India. The researchers collected accident data, traffic volume counts, and spot speed data at the intersection. They analyzed the road geometry and identified deficiencies such as narrow footpaths, vegetation obstructing lanes, and bus stops too close to the intersection. The study found that most accidents occurred during the day and involved two-wheelers and heavy vehicles speeding. It concluded that relocating bus stops, widening footpaths, improving signage and markings, and enforcing speed limits could help address safety issues at the intersection.
This document evaluates cost-effective railway level crossing protection systems. It begins with an introduction describing the safety issues at railway level crossings. It then reviews literature on previous protection systems used worldwide. Next, it describes the current situation of level crossings in India, including initiatives to improve safety. The document outlines some advanced protection systems being developed, such as using radio-based train control or GPS. It evaluates alternatives like using solar-powered sensors. Finally, it analyzes accident statistics in India, finding that level crossing accidents have risen from around 7% to over 50% of total railway accidents between 1990-2013. The document provides an overview of level crossing safety issues and technologies.
Crossroads Vertical Speed Control Devices: Suggestion from Observation drboon
This work focused on traffic audits and investigation of the vertical speed control devices installed at crossroads as traffic speed being controlled but rear-end accidents can still be found. The speed monitoring through 85th percentile speeds for various types of vehicles: i) passenger cars, ii) pickup trucks, iii) motorbikes, and iv) passenger buses and lorries (i.e., more than four wheels vehicles) was performed. Discussion and recommendation from the obtained results have been made. As an alternative choice to reduce crossroad rear-end collisions, this work introduced crossroad speed table.
The document provides details about planning an urban green corridor along the Ashiana-Digha Road in Patna, Bihar. It discusses the objectives to develop strategies for the corridor, identify issues along the stretch, and prepare a green road design and beautification plan. It describes the existing conditions along the road such as encroachments, flooding risks, and increasing traffic congestion. The document then outlines various components of an urban green corridor including road design, landscaping, pedestrian pathways, parking, and traffic signs. Design guidelines for a sub-arterial road from the Indian Roads Congress are also summarized.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document discusses a study that aimed to determine the optimal number of closed lanes in work zones on divided rural highways in Egypt to minimize user costs. The study used the World Bank's HDM-4 software to evaluate operating speed, travel time costs, vehicle operating costs, and national income loss under various work zone configurations on 8-lane, 6-lane and 4-lane highways. Field data was also collected and analyzed to verify the HDM-4 results. The findings recommended that vehicle operating costs decrease when more lanes are closed if operating speeds are between 50-0 kph, but increase if speeds are between 50-free flow kph. Travel time costs increase and operating speeds decrease with more closed lanes.
IRJET- A Study on Life Cycle Cost Analysis for RoadsIRJET Journal
This document presents a study on life cycle cost analysis (LCCA) for roads. It discusses LCCA methodology, which considers construction as well as long-term maintenance and rehabilitation costs when evaluating pavement alternatives. The document analyzes the LCCA of a 26km section of the Ghoti-Sinnar Highway in India using the net present value method over a 10-year period. It calculates the construction cost, annual operation and maintenance costs assuming a 10% increase each year, and salvage value to determine the total life cycle cost. The analysis aims to optimize long-term expenses and select the most cost-effective pavement option.
The Study on Method to Determine the Priority in Sidewalk Installation on Rur...inventionjournals
This study proposes a method to determine priority for installing sidewalks on rural roads in Korea. It identifies evaluation factors like pedestrian traffic, accidents, development density, and road conditions. Experts were surveyed to determine the relative importance of these factors. The factors are categorized into grades and assigned weighted points. An example shows how points are calculated for a given location based on its grades for each evaluation factor. The goal is to develop a quantitative method for prioritizing sidewalk installations that considers pedestrian safety as well as efficient use of limited budgets.
Identification of Factors to Improve Public Transit Services (A Case Study of...Dr. Amarjeet Singh
This research presents studies on a segment of highway to determine the quantitative factors that inuence transit services. Travel time and delay study is one of the method to determine quantitative factors. Tour time is described as the average period of time required to journey from one region to some other. Total departure time consists of gadgets which include total working time, places and general delay time. The examine section was done in Prithvi chowk to Tal chowk of Prithvi Highway which is turned to be 12.5 km long.
Additionally, it has been found that the principle variables affecting travel time are: postpone time because of forestall selecting and choosing up passengers, bus model and bus size.32 trips public transport carrier and a 10 trips non-public automobile journey have been held during peak hours. Models are developed the use of SPSS software to become aware of the relationship between the causes of delays and the overall-time delays. Travel time and learning delays can help reduce the number of private vehicles operating and increase the number of public vehicles in order to reduce congestion and improve the e efficiency of the public transport system. It turned into determined that there was a full-size distinction in tour time among the use of the public transit services and the car.
Similar to Appraisal of airport roundabout on the antoa road, kumasi ghana using micro simulation model (20)
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
Managing drought short term strategies in semi arid regions a case studyeSAT Journals
Abstract
Drought management needs multidisciplinary action. Interdisciplinary efforts among the experts in various fields of the droughts
prone areas are helpful to achieve tangible and permanent solution for this recurring problem. The Gulbarga district having the total
area around 16, 240 sq.km, and accounts 8.45 per cent of the Karnataka state area. The district has been situated with latitude 17º 19'
60" North and longitude of 76 º 49' 60" east. The district is situated entirely on the Deccan plateau positioned at a height of 300 to
750 m above MSL. Sub-tropical, semi-arid type is one among the drought prone districts of Karnataka State. The drought
management is very important for a district like Gulbarga. In this paper various short term strategies are discussed to mitigate the
drought condition in the district.
Keywords: Drought, South-West monsoon, Semi-Arid, Rainfall, Strategies etc.
Life cycle cost analysis of overlay for an urban road in bangaloreeSAT Journals
Abstract
Pavements are subjected to severe condition of stresses and weathering effects from the day they are constructed and opened to traffic
mainly due to its fatigue behavior and environmental effects. Therefore, pavement rehabilitation is one of the most important
components of entire road systems. This paper highlights the design of concrete pavement with added mono fibers like polypropylene,
steel and hybrid fibres for a widened portion of existing concrete pavement and various overlay alternatives for an existing
bituminous pavement in an urban road in Bangalore. Along with this, Life cycle cost analyses at these sections are done by Net
Present Value (NPV) method to identify the most feasible option. The results show that though the initial cost of construction of
concrete overlay is high, over a period of time it prove to be better than the bituminous overlay considering the whole life cycle cost.
The economic analysis also indicates that, out of the three fibre options, hybrid reinforced concrete would be economical without
compromising the performance of the pavement.
Keywords: - Fatigue, Life cycle cost analysis, Net Present Value method, Overlay, Rehabilitation
Laboratory studies of dense bituminous mixes ii with reclaimed asphalt materialseSAT Journals
Abstract
The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to
provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing
pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this
are today’s burning issue and has become the purpose of the study.
In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The
mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP).
RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II)
gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics.
Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the
variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the
methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes.
Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II
Laboratory investigation of expansive soil stabilized with natural inorganic ...eSAT Journals
This document summarizes a study on stabilizing expansive black cotton soil with the natural inorganic stabilizer RBI-81. Laboratory tests were conducted to evaluate the effect of RBI-81 on the soil's engineering properties. The tests showed that with 2% RBI-81 and 28 days of curing, the unconfined compressive strength increased by around 250% and the CBR value improved by approximately 400% compared to the untreated soil. Overall, the study found that RBI-81 effectively improved the strength properties of the black cotton soil and its suitability as a soil stabilizer was supported.
Influence of reinforcement on the behavior of hollow concrete block masonry p...eSAT Journals
Abstract
Reinforced masonry was developed to exploit the strength potential of masonry and to solve its lack of tensile strength. Experimental
and analytical studies have been carried out to investigate the effect of reinforcement on the behavior of hollow concrete block
masonry prisms under compression and to predict ultimate failure compressive strength. In the numerical program, three dimensional
non-linear finite elements (FE) model based on the micro-modeling approach is developed for both unreinforced and reinforced
masonry prisms using ANSYS (14.5). The proposed FE model uses multi-linear stress-strain relationships to model the non-linear
behavior of hollow concrete block, mortar, and grout. Willam-Warnke’s five parameter failure theory has been adopted to model the
failure of masonry materials. The comparison of the numerical and experimental results indicates that the FE models can successfully
capture the highly nonlinear behavior of the physical specimens and accurately predict their strength and failure mechanisms.
Keywords: Structural masonry, Hollow concrete block prism, grout, Compression failure, Finite element method,
Numerical modeling.
Influence of compaction energy on soil stabilized with chemical stabilizereSAT Journals
This document summarizes a study on the influence of compaction energy on soil stabilized with a chemical stabilizer. Laboratory tests were conducted on locally available loamy soil treated with a patented polymer liquid stabilizer and compacted at four different energy levels. The study found that increasing the compaction effort increased the density of both untreated and treated soil, but the rate of increase was lower for stabilized soil. Treating the soil with the stabilizer improved its unconfined compressive strength and resilient modulus, and reduced accumulated plastic strain, with these properties further improved by higher compaction efforts. The stabilized soil exhibited strength and performance benefits compared to the untreated soil.
Geographical information system (gis) for water resources managementeSAT Journals
This document describes a hydrological framework developed in the form of a Hydrologic Information System (HIS) to meet the information needs of various government departments related to water management in a state. The HIS consists of a hydrological database coupled with tools for collecting and analyzing spatial and non-spatial water resources data. It also incorporates a hydrological model to indirectly assess water balance components over space and time. A web-based GIS portal was created to allow users to access and visualize the hydrological data, as well as outputs from the SWAT hydrological model. The framework is intended to facilitate integrated water resources planning and management across different administrative levels.
Forest type mapping of bidar forest division, karnataka using geoinformatics ...eSAT Journals
Abstract
The study demonstrate the potentiality of satellite remote sensing technique for the generation of baseline information on forest types
including tree plantation details in Bidar forest division, Karnataka covering an area of 5814.60Sq.Kms. The Total Area of Bidar
forest division is 5814Sq.Kms analysis of the satellite data in the study area reveals that about 84% of the total area is Covered by
crop land, 1.778% of the area is covered by dry deciduous forest, 1.38 % of mixed plantation, which is very threatening to the
environmental stability of the forest, future plantation site has been mapped. With the use of latest Geo-informatics technology proper
and exact condition of the trees can be observed and necessary precautions can be taken for future plantation works in an appropriate
manner
Keywords:-RS, GIS, GPS, Forest Type, Tree Plantation
Factors influencing compressive strength of geopolymer concreteeSAT Journals
Abstract
To study effects of several factors on the properties of fly ash based geopolymer concrete on the compressive strength and also the
cost comparison with the normal concrete. The test variables were molarities of sodium hydroxide(NaOH) 8M,14M and 16M, ratio of
NaOH to sodium silicate (Na2SiO3) 1, 1.5, 2 and 2.5, alkaline liquid to fly ash ratio 0.35 and 0.40 and replacement of water in
Na2SiO3 solution by 10%, 20% and 30% were used in the present study. The test results indicated that the highest compressive
strength 54 MPa was observed for 16M of NaOH, ratio of NaOH to Na2SiO3 2.5 and alkaline liquid to fly ash ratio of 0.35. Lowest
compressive strength of 27 MPa was observed for 8M of NaOH, ratio of NaOH to Na2SiO3 is 1 and alkaline liquid to fly ash ratio of
0.40. Alkaline liquid to fly ash ratio of 0.35, water replacement of 10% and 30% for 8 and 16 molarity of NaOH and has resulted in
compressive strength of 36 MPa and 20 MPa respectively. Superplasticiser dosage of 2 % by weight of fly ash has given higher
strength in all cases.
Keywords: compressive strength, alkaline liquid, fly ash
Experimental investigation on circular hollow steel columns in filled with li...eSAT Journals
Abstract
Composite Circular hollow Steel tubes with and without GFRP infill for three different grades of Light weight concrete are tested for
ultimate load capacity and axial shortening , under Cyclic loading. Steel tubes are compared for different lengths, cross sections and
thickness. Specimens were tested separately after adopting Taguchi’s L9 (Latin Squares) Orthogonal array in order to save the initial
experimental cost on number of specimens and experimental duration. Analysis was carried out using ANN (Artificial Neural
Network) technique with the assistance of Mini Tab- a statistical soft tool. Comparison for predicted, experimental & ANN output is
obtained from linear regression plots. From this research study, it can be concluded that *Cross sectional area of steel tube has most
significant effect on ultimate load carrying capacity, *as length of steel tube increased- load carrying capacity decreased & *ANN
modeling predicted acceptable results. Thus ANN tool can be utilized for predicting ultimate load carrying capacity for composite
columns.
Keywords: Light weight concrete, GFRP, Artificial Neural Network, Linear Regression, Back propagation, orthogonal
Array, Latin Squares
Experimental behavior of circular hsscfrc filled steel tubular columns under ...eSAT Journals
This document summarizes an experimental study that tested circular concrete-filled steel tube columns with varying parameters. 45 specimens were tested with different fiber percentages (0-2%), tube diameter-to-wall-thickness ratios (D/t from 15-25), and length-to-diameter (L/d) ratios (from 2.97-7.04). The results found that columns filled with fiber-reinforced concrete exhibited higher stiffness, equal ductility, and enhanced energy absorption compared to those filled with plain concrete. The load carrying capacity increased with fiber content up to 1.5% but not at 2.0%. The analytical predictions of failure load closely matched the experimental values.
Evaluation of punching shear in flat slabseSAT Journals
Abstract
Flat-slab construction has been widely used in construction today because of many advantages that it offers. The basic philosophy in
the design of flat slab is to consider only gravity forces; this method ignores the effect of punching shear due to unbalanced moments
at the slab column junction which is critical. An attempt has been made to generate generalized design sheets which accounts both
punching shear due to gravity loads and unbalanced moments for cases (a) interior column; (b) edge column (bending perpendicular
to shorter edge); (c) edge column (bending parallel to shorter edge); (d) corner column. These design sheets are prepared as per
codal provisions of IS 456-2000. These design sheets will be helpful in calculating the shear reinforcement to be provided at the
critical section which is ignored in many design offices. Apart from its usefulness in evaluating punching shear and the necessary
shear reinforcement, the design sheets developed will enable the designer to fix the depth of flat slab during the initial phase of the
design.
Keywords: Flat slabs, punching shear, unbalanced moment.
Evaluation of performance of intake tower dam for recent earthquake in indiaeSAT Journals
Abstract
Intake towers are typically tall, hollow, reinforced concrete structures and form entrance to reservoir outlet works. A parametric
study on dynamic behavior of circular cylindrical towers can be carried out to study the effect of depth of submergence, wall thickness
and slenderness ratio, and also effect on tower considering dynamic analysis for time history function of different soil condition and
by Goyal and Chopra accounting interaction effects of added hydrodynamic mass of surrounding and inside water in intake tower of
dam
Key words: Hydrodynamic mass, Depth of submergence, Reservoir, Time history analysis,
Evaluation of operational efficiency of urban road network using travel time ...eSAT Journals
This document evaluates the operational efficiency of an urban road network in Tiruchirappalli, India using travel time reliability measures. Traffic volume and travel times were collected using video data from 8-10 AM on various roads. Average travel times, 95th percentile travel times, and buffer time indexes were calculated to assess reliability. Non-motorized vehicles were found to most impact reliability on one road. A relationship between buffer time index and traffic volume was developed. Finally, a travel time model was created and validated based on length, speed, and volume.
Estimation of surface runoff in nallur amanikere watershed using scs cn methodeSAT Journals
Abstract
The development of watershed aims at productive utilization of all the available natural resources in the entire area extending from
ridge line to stream outlet. The per capita availability of land for cultivation has been decreasing over the years. Therefore, water and
the related land resources must be developed, utilized and managed in an integrated and comprehensive manner. Remote sensing and
GIS techniques are being increasingly used for planning, management and development of natural resources. The study area, Nallur
Amanikere watershed geographically lies between 110 38’ and 110 52’ N latitude and 760 30’ and 760 50’ E longitude with an area of
415.68 Sq. km. The thematic layers such as land use/land cover and soil maps were derived from remotely sensed data and overlayed
through ArcGIS software to assign the curve number on polygon wise. The daily rainfall data of six rain gauge stations in and around
the watershed (2001-2011) was used to estimate the daily runoff from the watershed using Soil Conservation Service - Curve Number
(SCS-CN) method. The runoff estimated from the SCS-CN model was then used to know the variation of runoff potential with different
land use/land cover and with different soil conditions.
Keywords: Watershed, Nallur watershed, Surface runoff, Rainfall-Runoff, SCS-CN, Remote Sensing, GIS.
Estimation of morphometric parameters and runoff using rs & gis techniqueseSAT Journals
This document summarizes a study that used remote sensing and GIS techniques to estimate morphometric parameters and runoff for the Yagachi catchment area in India over a 10-year period. Morphometric analysis was conducted to understand the hydrological response at the micro-watershed level. Daily runoff was estimated using the SCS curve number model. The results showed a positive correlation between rainfall and runoff. Land use/land cover changes between 2001-2010 were found to impact estimated runoff amounts. Remote sensing approaches provided an effective means to model runoff for this large, ungauged area.
Effect of variation of plastic hinge length on the results of non linear anal...eSAT Journals
Abstract The nonlinear Static procedure also well known as pushover analysis is method where in monotonically increasing loads are applied to the structure till the structure is unable to resist any further load. It is a popular tool for seismic performance evaluation of existing and new structures. In literature lot of research has been carried out on conventional pushover analysis and after knowing deficiency efforts have been made to improve it. But actual test results to verify the analytically obtained pushover results are rarely available. It has been found that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. Initial study is carried out by considering user defined hinge properties and default hinge length. Attempt is being made to assess the variation of pushover analysis results by considering user defined hinge properties and various hinge length formulations available in literature and results compared with experimentally obtained results based on test carried out on a G+2 storied RCC framed structure. For the present study two geometric models viz bare frame and rigid frame model is considered and it is found that the results of pushover analysis are very sensitive to geometric model and hinge length adopted. Keywords: Pushover analysis, Base shear, Displacement, hinge length, moment curvature analysis
Effect of use of recycled materials on indirect tensile strength of asphalt c...eSAT Journals
Abstract
Depletion of natural resources and aggregate quarries for the road construction is a serious problem to procure materials. Hence
recycling or reuse of material is beneficial. On emphasizing development in sustainable construction in the present era, recycling of
asphalt pavements is one of the effective and proven rehabilitation processes. For the laboratory investigations reclaimed asphalt
pavement (RAP) from NH-4 and crumb rubber modified binder (CRMB-55) was used. Foundry waste was used as a replacement to
conventional filler. Laboratory tests were conducted on asphalt concrete mixes with 30, 40, 50, and 60 percent replacement with RAP.
These test results were compared with conventional mixes and asphalt concrete mixes with complete binder extracted RAP
aggregates. Mix design was carried out by Marshall Method. The Marshall Tests indicated highest stability values for asphalt
concrete (AC) mixes with 60% RAP. The optimum binder content (OBC) decreased with increased in RAP in AC mixes. The Indirect
Tensile Strength (ITS) for AC mixes with RAP also was found to be higher when compared to conventional AC mixes at 300C.
Keywords: Reclaimed asphalt pavement, Foundry waste, Recycling, Marshall Stability, Indirect tensile strength.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
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Cooperation Organisation and the Belt and Road Economic Initiative.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
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Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
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Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
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Appraisal of airport roundabout on the antoa road, kumasi ghana using micro simulation model
1. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 238
APPRAISAL OF AIRPORT ROUNDABOUT ON THE ANTOA ROAD,
KUMASI-GHANA USING MICRO SIMULATION MODEL
A. Obiri-Yeboah1
, E. K. Nyantakyi2
, D. Pobee3
, G. A. Mohammed4
1, 2, 3, 4
Department of Civil Engineering, Kumasi Polytechnic, Kumasi-Ghana,
aanyar@yahoo.co.uk, emmanuelkwesinyantakyi@yahoo.com, drusspee@yahoo.com, gam1980sep@yahoo.com
Abstract
Roundabouts have become increasingly popular in recent years as an innovative operational and safety solution at both low volume
and high volume intersections. Roundabouts have a number of advantages over traffic signals depending on the conditions. They
reduce the severity of crashes since head-on and right-angle conflicts are nearly eliminated. They reduce through traffic speeds to
provide a “calmer” roadway environment. This study appraised Airport roundabout on the Antoa Road in Kumasi, Ghana using
micro simulation model. Traffic and geometric data were collected on the field. The analysis revealed that Airport roundabout was
operating at a level of service F, which represented worst conditions. Signalized intersection with 4 approach lanes on the two
principal arterials was proposed to control all the movements. Exclusive pedestrian phases were proposed to protect pedestrians.
Keywords: Appraisal, Airport roundabout, Capacity analysis, Antoa Road.
-----------------------------------------------------------------------***-----------------------------------------------------------------------
1. INTRODUCTION
As defined by the Federal Highway Administration [1],
modern roundabouts are circular intersections with specific
traffic control and design features. These features include
yield control at entry, channelized approaches, and geometric
approach curvature (deflection) to induce entering traffic to
slow down to the design speed of the circulatory roadway. The
crosswalks are set back from the intersection to minimize
conflicts with turning vehicles. Roundabouts have
characteristics that differentiate them from traffic circles,
rotaries and traffic calming circles. Roundabouts have a
proven safety record that is superior to other forms of traffic
control [2 - 4]. The stretch of the Antoa road between the
Airport roundabout and Buokrom area gets very congested
especially during the morning and evening peak periods.
Airport roundabout, which is on the Antoa road is a very busy
roundabout and congested during the morning and evening
peaks [5]. The activities of the washing bay around the airport
roundabout also affect the smooth flow of traffic on the
Airport-Buokrom section. There are virtually no sidewalks,
resulting in pedestrians walking on the road, thereby exposing
them to danger [5].
Previous studies on the performance of the roundabout
attributed the congestion critical capacity and abuse to
motorists and/or pedestrians. As part of the recommendations,
the report proposed to improve upon the signalization and
capacity at Airport roundabout. They recommended that if at-
grade capacity cannot be obtained for the minimum
requirements, then a grade separation scheme should be
constructed at the roundabout. This could either be a flyover
or an interchange [5].
These recommendations have not been implemented due to
lack of funds and therefore long queues and frequent delays
still persist during the morning and evening peaks of the day at
the roundabout. It is in this light that this study was
undertaken to appraise the capacity and performance of
Airport roundabout in Kumasi to find out an effective way of
resolving the traffic congestion problem.
2. METHODOLOGY
2.1 Site Selection and Description
Airport roundabout was selected based on its accident and
safety records in the past and also the levels of congestion
associated with the roundabout. Airport Roundabout Airport
roundabout has five (5) legs with two (2) approach/entry and
exit lanes on all legs, except the Manhyia/Kejetia and the
Buokrom legs, which have one (1) approach/entry and exit
lanes as shown in Fig 1. Airport roundabout is the intersection
of two (2) Principal arterials and a local road, namely:
Okomfo Anokye road - Principal Arterial, Antoa road -
Principal Arterial, and Airport road – Local road as shown in
Fig. 1.
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Fig-1: Geometry of Airport Roundabout; Source: BCEOM and ACON Report (2004)
2.2 Study Area
2.2.1 Okomfo Anokye Road
The Okomfo Anokye Road is a principal arterial running
mostly in a North/South direction (Anloga Junction to Airport
Roundabout) and mostly in an East/West direction (Airport
roundabout to Suame Roundabout). It covers a distance of
about 6.4 km, (from Anloga Junction to Suame Roundabout).
The road is a paved 2-lane dual carriageway (4-lane 2-way),
over its entire stretch. The road forms part of the ring road
and it provides a major vital link between the Western By-
Pass, Mampong Road and Offinso Road and the 24th February
Road. This vital link serves as a bypass route, especially for
the North/South travellers of the country.
The intersections along this road are the main cause of
bottlenecks on the road. The intersection controls are not good
enough and driver indiscipline also compounds it. The
Adukrom intersection experiences illegal U-turns within the
intersection, which creates hazardous conditions for on-
coming traffic. There are lots of delay and conflicting
movements at the Asokore Mampong Road/Aboabo Road
intersection. This is due to the existing phasing plan/signal
timings. There is a lot of diverted traffic joining the Asokore
Mampong leg from Buokrom to avoid the congestion at the
Airport Roundabout. This makes the approach volume heavy
as against a small green time allotted to it.
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2.2.2 Antoa Road
The Antoa road is a principal arterial, which runs mostly in a
North-South direction. The road covers an urban, (study)
length of about 6 km, (from Kejetia/Dr. Mensah to Buokrom
area). The road is a single carriageway and it is paved
throughout its entire length. The Antoa Road has a short one-
way section, about 150 meters between “Dr. Mensah” and
Odumase road intersection.
The Kejetia, (Dr Mensah) area is very congested as it is in the
central business district. The road in this area is narrow with
residences closely abutting it. The stretch of the Antoa road
between the Airport roundabout and Buokrom area gets very
congested especially during the morning and evening peak
periods. A lot of diverted traffic from the Mampong road joins
the Antoa road at the Buokrom Estate road intersection. The
activities of the washing bay around the airport roundabout
also affect the smooth flow of traffic on the Airport-Buokrom
section. There are virtually no sidewalks, resulting in
pedestrians walking on the road, thereby exposing them to
danger.
2.2.3 Airport Road
The airport road leads to the Kumasi Airport.
2.3 Basic Theoretical Background
One of the oldest and most well known cases of the use of
simulation in theoretical research is the “car-following”
analysis based on the Generalized General Motors (GM)
models. In these models a differential equation governs the
movement of each vehicle in the platoon under analysis [6].
Car-following, like the intersection analysis, is one of the
basic equations of traffic flow theory and simulation, and the
analysis has been active after almost 40 years from the first
trials [7].The car-following theory is of significance in
microscopic traffic flow theory and has been widely applied in
traffic safety analysis and traffic simulation [8, 9]. There have
been many car-following models in the past 60 years, and the
models can be divided into two categories. One is developed
from the viewpoint of traffic engineering and the other is
based on statistical physics. From the perspective of traffic
engineers [10], car-following models can be classified as
stimulus-response models [11,12], safety distance models
[13], psycho-physical models [14], and artificial intelligence
models [15, 16].
The car-following theory is based on a key assumption that
vehicles will travel in the center line of a lane, which is
unrealistic, especially in developing countries. In these
countries, poor road conditions, irregular driving discipline,
unclear road markings, and different lane widths typically lead
to non-lane-based car-following driving [17]. Heterogeneous
traffic, characterized by diverse vehicles, changing
composition, lack of lane discipline, etc., results in a very
complex behavior and a non-lane-based driving in most Asian
countries [18]. Therefore, it is difficult for every vehicle to be
moving in the middle of the lane. Vehicles are positioned
laterally within their lanes, and the off central-line effect
results in lateral separations. However, to the limit of our
knowledge, the effect of lateral separation in the car-following
process has been ignored by the vast majority of models. A
few researchers have contributed efforts on this matter. [17]
first developed a car-following model with lateral discomfort.
He improved a stopping distance based approach that was
proposed by [13], and presented a new car-following model,
taking into account lateral friction between vehicles.[19]
proposed a non-lane-based car following model using a
modified full-velocity difference model. All the above models
have assumed that drivers are able to perceive distances,
speeds, and accelerations. However, car-following behavior is
a human process. It is difficult for a driver of the following
vehicle to perceive minor lateral separation distances, and
drivers may not have precise perception of speeds and
distances, not to mention accelerations.
2.3.1 Car-following Models
The logic used to determine when and how much a car
accelerates or decelerates is crucial to the accuracy of a
microscopic simulation model. Most simulation models use
variations on the GM model. Although it was developed in the
1950s and 1960s, it has remained the industry standard for
describing car-following behavior and continues to be verified
by empirical data. A variation on the GM model is the PITT
car-following model, which is utilized in FRESIM. The GM
family of models is perceived to be the most commonly used
in microscopic traffic simulation models and are, therefore,
the focus of this article.
2.3.1.1 Generalized General Motors Models
The first GM model modeled car-following is a stimulus-
response process in which the following vehicle attempts to
maintain space headway. When the speed of a leading vehicle
decreases relative to the following vehicle, the following
vehicle reacts by decelerating. Conversely, the following
vehicle accelerates when the relative speed of the leading
vehicle increases. This process can be represented by the first
GM model, given equation 1.
tt FL
F F
Eq. (1)
Where,
F
= acceleration of the following vehicle,
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F
= speed of the following vehicle,
L
= speed of the leading vehicle,
αF = sensitivity of the following vehicle, and
t = time.
2.3.1.2 PITT Car-following Model
FRESIM uses the PITT car-following model, which is
expressed in terms of desired space headway, shown in the
equation 2.
2
212 TVtVbkkVmLths Eq. (2)
Where,
hs(t) = desired space headway at time t,
L = length of leading vehicle,
m = minimum car-following distance (PITT constant),
k = car-following sensitivity factor for following vehicle,
b = relative sensitivity constant,
v1(t) = speed of leading vehicle at time t, and
v2(t) = speed of following vehicle at time t.
Equation above can be solved for the following vehicle’s
acceleration, given by the equation 3.
KTT
tVtVbkTKVmLyx
a
2
2
2
2
212
Eq. (3)
Where,
a = the acceleration of the following vehicle,
T = the duration of the scanning interval,
x = position of the leading vehicle, and
y = position of the following vehicle.
2.4 Algorithm on Synchro/SimTraffic Software
Simulation is basically a dynamic representation of some part
of the real world achieved by building a computer model and
moving it through time. The results obtained from any
simulation model will be as good as the model replicates the
specific real world characteristics of interest to the analyst.
Once a vehicle is assigned performance and driver
characteristics, its movement through the network is
determined by three primary algorithms:
2.4.1 Car Following
This algorithm determines behavior and distribution of
vehicles in traffic stream. Synchro varies headway with driver
type, speed and link geometry whereas SimTraffic generates
lower saturation flow rates.
2.4.2 Lane Changing
This is always one of the most temperamental features of
simulation models. There are three types of lane-changing
which includes
Mandatory lane changes (e.g., a lane is obstructed or
ends)
Discretionary lane changes (e.g., passing)
Positioning lane changes (e.g., putting themselves in the
correct lane in order to make a turn): There is heavy
queuing and this is a common problem for modeling
positioning lane changes. Vehicles often passed back of
queue before attempting lane change and their accuracy
relates to degree of saturation and number of access
points such as congested conditions which requires farther
look ahead and densely-spaced access (i.e. short
segments) which presents a problem.
2.4.3 Gap Acceptance
Gap acceptance affects driver behavior at unsignalized
intersections, driveways (e.g., right-in-right-out) and right-
turn-on-red (RTOR) movements. If default parameters are too
aggressive, vehicle delay will be underestimated and there is
serious implication for frontage roads. Conversely, parameters
which are too conservative may indicate need for a signal
when one isn’t necessary. Gap acceptance parameters are
network-wide in SimTraffic.
2.4.4 Turning Movement Counts
Data was collected manually at Airport roundabout because it
was difficult getting good elevation observer positions.
Turning movement counts were collected between 0600hours
and 1800 hours during the morning and evening peak periods
of the day at the roundabout. Two enumerators each were
positioned on each leg of the approach to the roundabout. The
number of vehicles entering and leaving the two principal
arterials such as Antoa road and Okomfo Anokye road and the
local road such as the Airport road were counted using the
vehicle number plate method. All the Turning movement
counts were conducted at 15min intervals.
2.4.5 Intersection Capacity Analysis for Suame
Roundabout
The Department of Transport of the UK recommends a
research carried out by the Transport and Road Research
Laboratory (TRRL) that predicts an equation for the
determination of the capacities of roundabouts. The predictive
equation for entry capacity into the circulatory area was used
for entry capacity determination and is given by equation 4.
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 242
Qe = K*(F – fc Qc) Eq. (4)
Where,
Qe is the entry flow into the circulatory area in passenger car
units per hour (pcu/hr)
Qc is the flow in the circulatory area in conflict with the entry
flow in passenger car units per hour (pcu/hr).
K = 1-0.00347( - 30) – 0.978(1/r – 0.05)
F = 303X2
fc = 0.21tD(1+0.2X2)
tD = 1+0.5/(1+M)
M = exp[(D – 60)/10]
X2 = v + (e – v)/(1+2S)
S = 1.6(e – v)/l
e = entry width (metres) - measured from a point normal to the
rear kerbside
v = approach half-width: measured along a normal from a
point in the approach stream from any entry flare
l = average effective flare length: measured along a line
drawn at right angles from the widest point of the entry flare
S = sharpness of flare: indicates the rate at which extra width
is developed within the entry flare
D = inscribed circle diameter: the biggest circle that can be
inscribed within the junction
= entry angle: measures the conflict angle between entering
and circulating traffic
r = entry radius: indicates the radius of curvature of the
nearside kerb line on entry.
2.4.6 Intersection Capacity Analysis
The intersection Capacity analysis was performed using
intersection capacity utilization (ICU) to determine the Level
of service (LOS) at Suame roundabout. An initial analysis was
performed for the existing rotary intersection to determine its
performance. Once the ICU was fully calculated, the ICU LOS
for the roundabout was subsequently calculated based on the
criteria given by [20] Table -1.
Table -1: Intersection Capacity Utilization LOS and Grading Criteria
LOS ICU (%) Grading Criteria
A ≤ 55 Intersection has no congestion
B 55<ICU<64 Intersection has very little congestion
C 64<ICU<73 Intersection has no major congestion
D 73<ICU<82 Intersection normally has no congestion
E 82<ICU<91 Intersection is on the verge of congested conditions
F 91<ICU<100 Intersection is over capacity and likely experiences congestion periods of
15 to 60 consecutive minutes
G 1005<ICU<109 Intersection is 9% over capacity and experiences congestion periods of 60
to 120 consecutive minutes.
H >109% The intersection is 9% or greater over capacity and could experience
congestion periods of over 120 minutes per day.
3. RESULTS AND DISCUSSION
3.1 Turning Movement Counts
Summary of total approach volume for each approach at
Airport roundabout is shown in Table 2.
Table -2: Summary of Total Approach volume at Airport Roundabout
Approaches Anloga Jn Krofrom Kejetia Buokrom Airport Total
Anloga Jn 0 1452 900 860 26 3238
Krofrom 1896 0 189 563 35 2683
Kejetia 989 198 0 960 33 2180
Buokrom 542 322 1230 0 13 2107
Airport 65 36 49 23 0 173
Total 3492 2008 2368 2406 107
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Source: from study
It can be deduced from Table 2 that 31.2% of vehicles moved
from Anloga Junction approach to the other approaches at
Airport roundabout. This was followed by 25.8% of vehicles
from Krofrom, 21.0% of vehicles from Kejetia whiles 20.3%
of vehicles moved from Buokrom approach. Airport approach
had 1.7% of vehicles moving to other approaches.
3.2 Capacity Analysis
Hourly flow rate for the approaches at Airport Roundabout is
shown in Table 3
Table -3: Capacity calculations for Airport Roundabout
Approaches Hourly flow rate (veh/hr)
East Bound North (EBN), V1 1452
East Bound West (EBW), V2 900
East Bound South (EBS), V3 860
East Bound South East (EBSE), V4 26
West Bound North (WBN), V5 198
West Bound East (WBE), V6 989
West Bound South (WBS), V7 960
West Bound South East (WBSE), V8 33
North Bound East (NBE), V9 1896
North Bound West (NBW), V10 189
North Bound South (NBS), V11 563
North Bound South East (NBSE), V12 35
South Bound North (SBN), V13 322
South Bound West (SBW), V14 1230
South Bound East (SBE), V15 542
South Bound South East (SBSE), V16 13
South East North (SEN), V17 36
South East West (SEW), V18 49
South East South (SES), V19 23
South East East (SEE), V20 65
Source: from study
From Table 3, it was realized that North Bound East (NBE),
V9 had the highest hourly flow rate of 1896veh/hr at Airport
roundabout. This meant that 1896 vehicles traversed the north
bound east direction in an hour. Similarly, South Bound South
East (SBSE), V16 had the lowest hourly flow rate of 13veh/hr
meaning 13 vehicles traversed the South Bound South East
direction within an hour.
Table - 4: Approach Flow at Airport Roundabout
Approach Flow (veh/hr) Approach Volume, Va
Va,E = V1+V2+V3+V4 3238
Va,W = V5+V6+V7+V8 2683
Va,N = V9+V10+V11+V12 2180
Va,S = V13+V14+V15+V16 2107
Va,SE = V17+V18+V19+V20 173
Source: from study
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Va,E approach had the highest approach flow of 3238veh/hr
as shown in Table 4 at Airport roundabout. This meant that
3238vehicles came from Va,E approach in an hour.
2683veh/hr came from Va,W approach, followed by Va,N
approach which had 2180veh/hr. Va,S approach gave
2107veh/hr and Va,SE approach gave a lowest approach
volume of 173 veh/hr.
Table -5: Circulating flows at Airport Roundabout
Circulating Flow Flow, Qc
(veh/hr)
Flow in pcu/hr
(x1.1)
Factored Flow
(x1.125)
Vc,E = V1+V2+V3+V4 1858 2044 2299
Vc,W = V5+V6+V7+V8 3088 3397 3821
Vc,N = V9+V10+V11+V12 3403 3743 4211
Vc,S = V13+V14+V15+V16 3177 3495 3932
Vc,SE = V17+V18+V19+V20 5177 5695 6407
Vc,SE approach had the highest circulating flow of
5177veh/hr at Airport roundabout, Vc,N approach which gave
a circulating flow of 3403veh/hr as shown in Table 5. Vc,S
approach had a circulating flow of 3177veh/hr with Vc,W
approach having the lowest circulation flow of 18585veh/hr.
Similarly, in terms of flow in pcu, Vc,SE approach gave the
highest flow of 5695pcu/hr and the Vc,E approach gave the
least flow of 2044pcu/hr.
Entry capacity, circulating flow and reserve capacities for each
approach at Airport roundabout is shown in Table 6.
Table -6: Entry capacity, circulating flow and reserve capacity for the approaches at Airport Roundabout
Parameters Airport Krofrom Anloga Jn Buokrom Kejetia
Entry width, e 7.7 7.7 7.7 7.7 7.7
Approach Half width, v 7 7 7 7 7
Average Effective Flare
Length, l’
15 15 15 15 15
Sharpness of Flare, S 0.07467 0.07467 0.07467 0.07467 0.07467
Inscribed Circle Diameter,
D
78 78 78 78 78
Entry Angle, Φ 60 60 60 60 60
Entry Radius, r 60 60 60 60 60
M 6.04965 6.04965 6.04965 6.04965 6.04965
X2 7.60905 7.60905 7.60905 7.60905 7.60905
tD 1.07093 1.07093 1.07093 1.07093 1.07093
fc 0.56714 0.56714 0.56714 0.56714 0.56714
F 2305.5418 2305.5418 2305.5418 2305.5418 2305.5418
K 0.9285 0.9285 0.9285 0.9285 0.9285
Qc 1752 3821 4211 3932 6407
Qe 1218 128 -77 70 -1233
Source: from study
From Table 6, it was realized that the Kejetia approach had the
highest circulatory flow of 6407pcu/hr at Airport roundabout.
This meant that 6407 of the flow in the circulatory area was in
conflict with the entry flow of -1233. Airport approach had the
lowest circulatory flow of 1752pcu/hr. This again meant that
1752 of the flow in the circulatory area was in conflict with
the entry flow of 1218.
The flow to capacity ratios of each approach at Airport
Roundabout is shown in Table 7.
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Table -7: Flow to Capacity ratios at Airport Roundabout
Approaches Circulating
flow, Qc
Entry
capacity
(pcu/hr)
Entry flow
(pcu/hr)
Reserve
capacity
(%)
Flow to
capacity
ratio
Anloga Jn 4211 -77 3238 -166 2.66
Krofrom 3821 128 2683 3589 -34.89
Kejetia 6407 -1233 2180 -1598 16.98
Buokrom 3932 70 2107 -2893 29.93
Airport 1752 1218 173 114 -0.14
Source: from study
It was realized again from the capacity analysis that Airport
roundabout was at full capacity based on the overall volume to
capacity ratio as shown in Table 7. The above flow to
capacity ratios revealed that Airport roundabout was operating
at a level of service F. Level of service F described a forced-
flow operation at low speeds, where volumes were below
capacity. These conditions usually resulted from queues of
vehicles backing up a restriction downstream at the
roundabout. Speeds were reduced substantially and stoppages
occurred for short or long periods of time because of the
downstream congestion. It represented worst conditions.
3.3 Intersection Capacity Analysis
Performance of Airport roundabout after capacity analysis is
shown in Table 8
Table 8: Performance of Airport roundabout
Intersection Control Type v/c ratio ICU % ICU LOS
Airport Roundabout Roundabout 4.48 187.9 H
Source: from study
The result from Table 8 showed that Airport roundabout was
performing beyond capacity in that, the roundabout was 9% or
greater over capacity and was experiencing congestion over 2
hours per day.
3.4 Signalization and Improvement of Airport
Roundabout
The proposed Geometry for Airport Roundabout is shown in
Fig.2.
9. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 246
Fig 2: Proposed Geometry for Airport Roundabout; Source: from study
Signalized intersection with 4 approach lanes for the principal
arterials was proposed as shown in Fig. 2. The Airport
roundabout signalization was basically to improve on
vehicular movement. However, signalization was proposed
considering the non-availability of funds. By critical and
careful examination of the conditions, signalization of the
Airport roundabout was proposed to control all the
movements. The proposed geometric data in Table 9 when
implemented will improve upon the performance of the
intersection. The central island would be channelized to aid
motorists to move from one approach to the other in order to
prevent conflicts and enhance safety. Pedestrian movements
would be separated in order not to interrupt the flow by
considering the number of lanes at each approach to the
roundabout. A pedestrian footbridge was thus proposed on all
legs to the roundabout.
10. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 247
Table -9: Proposed Geometric Data for Airport Roundabout
Intersection: Airport Roundabout
Movement From
(Area)
To (Area) Veh/hr % of
Heavy
vehicles
No. of
Lanes
Lane
width
(m)
Storage
Length
(m)
NWBL Kejetia 900 8 1 3.3 150.0
NWBT Anloga Jn Krofrom 1452 11 2 3.3
NWBR Buokrom 860 7 1 4.8 120.0
NWBR2 Airport 26 0 shared
SEBL Airport 35 0 1 4.0 150.0
SEBL2 Krofrom Buokrom 563 7 shared
SEBT Anloga Jn 1896 18 2 3.3
SEBR Kejetia 189 12 1 4.8 120.0
NEBL Krofrom 198 9 1 4.0 80.0
NEBT Kejetia Buokrom 960 17 2 3.3
NEBR Airport 33 0 1 4.8 120.0
NEBR2 Anloga Jn 989 16 shared
SWBL2 Airport 13 0 shared
SWBL Buokrom Anloga Jn 542 10 1 4.0 100.0
SWBT Kejetia 1230 17 2 3.3
SWBR Krofrom 322 13 1 4.8 100.0
WBL Kejetia 49 0 1 3.4
WBL2 Airport Anloga Jn 65 0 shared
WBR Krofrom 36 0 1 3.4
WBR2 Buokrom 23 0 shared
Source: from study
CONCLUSIONS
Airport roundabout was performing at full capacity based on
the overall volume to capacity ratio. Suame Roundabout
should be signalized to control all the movements.
It is cheaper to implement the signalised intersection to control
and alleviate vehicular movement than implementing the
interchange. The central island should be channelized to
enable motorists move from one approach to the other in order
to prevent conflicts and enhance safety. A pedestrian
footbridge should be constructed on all legs to the roundabout.
ACKNOWLEDGEMENTS
The authors would like to acknowledge the management of
Kumasi Polytechnic, Kumasi headed by the Rector Prof.
N.N.N. Nsowah-Nuamah, for providing financial assistance
and also Department of Urban Roads (DUR), Kumasi for
giving information on Airport roundabout in the Kumasi
Metropolis. Several supports from staff of the Civil
Engineering Department, Kumasi Polytechnic, Kumasi are
well appreciated.
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AUTHOR PROFILES
Abena Obiri-Yeboah (Mrs) is a PhD Transportation
Engineering Student at the Civil Engineering Department at
the College of Engineering, KNUST-Kumasi. She holds an
MSc. in Road and Transportation Engineering. Her research
areas are Transportation and Highway Engineering, Traffic
data Reduction and Analysis. She is a Member of Ghana
Institution of Engineers (GhIE).
Emmanuel Kwesi Nyantakyi is a PhD Student at the
Structural Geology Department, School of Earth Sciences,
Yangtze University, Wuhan-China. He holds an MSc. in Road
and Transportation Engineering. His research areas are Oil and
Gas Storage and Transportation, Structural Geology, Seismic
Interpretation and Geochemistry. He is a Member of American
Association of Petroleum Geologists (AAPG).
Drussilla Pobee is a staff of the Civil Engineering
Department, Kumasi Polytechnic and currently pursuing
Master’s in Water Resources Engineering. She holds an HND
and BTech degree in Civil Engineering at Kumasi
Polytechnic, Kumasi. Her research areas are Transportation
Engineering, Water Supply and Highway Engineering.
Ghadafi Abdullai Mohammed is a staff of the Civil
Engineering Department, Kumasi Polytechnic. He holds an
HND and BTech degree in Civil Engineering at Kumasi
Polytechnic. His research areas are Transportation
Engineering, Water Supply and Highway Engineering.