By Pronob Ghosh 1204011 BUET

1. TRAFFIC VOLUME
STUDY
Pronob Kumar Ghosh
St ID: 1204011
Department of Civil Engineering, BUET

2. Objectives
 Structural and Geometric Design
 Intersection design & Improvement
Decision for importance of road and fixing priority
 Inspection of existing service condition
 Measurement the effectiveness of Traffic Control
Planning for improvement of existing condition
 Economic feasibility study

3. Method of Counting
Three Methods are followed to count Traffic Volume
1. Manual Counting Method
 Direct Method
 Indirect Method
2. Automatic Counting Method
 Photo electric cell method
Electrical method
3. Moving Vehicle Method

4. Data Collection
 Location- Panthapath to Russel Square, Dhaka.
Date – 23 March 2017
Time – 8:30 AM- 8:40 AM
Duration – 10 minute (Short Count)
Observation – Classified Vehicle
Equipment – Tally , Vest
Number of Enumerators – 7

5. Data Accumulation
TIME
DIRECTION: PANTHAPATH -> RUSSEL SQUARE
MOTORIZED VEHICLES
GRO
UP
BU
S
(B)
TRUCK
(T)
MOTOR
CYCLE
(MC)
LIGHT VEHICLE (LV) AUTO
RICKSHA
W (AR)
SMALL
PUBLIC
TRANSPO
RT (SP)
TOTAL
VEHICL
ES
CAR/TAXI JEEP/
PAJE
RO
PICKUP AMBUL
ANCE
MICRO
BUS
BABY
TAXI/MIS
HOOK
MAXI /
TEMPOO
1st
Hour
1 4 0 33 94 5 4 0 16 41 0 197
2nd
Hour
2 2 0 16 70 8 6 1 10 27 0 140
3rd
Hour
3 6 5 26 104 7 10 5 22 38 0 223
4th
Hour
4 2 0 27 107 5 11 1 12 42 0 207
TOTA
L:
14 5 102 375 25 31 7 60 148 0 767

6. Summary
PCU/ 10min - 187
Service flow rate- 1122 vehicle/hour
Daily volume- 24741 vehicle/day
Weekly volume- 173484 vehicle/week
Average Daily Traffic- 24781 vehicle/day
Annual Average Daily Traffic- 40522 vehicle /day

7. Vehicle Composition of Traffic Stream
Bus
6%
Light Vehicle
64%
Motor Cycle
13%
Auto Rickshaw
17%
Bus Light Vehicle Motor Cycle Auto Rickshaw

8. Vehicle composition of traffic stream shows –
Most of the vehicle is light vehicle, it is 64% & reason behind is
volume study area associated with Commercial and Residential
area.
Percentage of Bus is low. To develop the existing traffic condition it
is suggested that if number of bus is increased by users, traffic
congestion may be reduced efficiently.
As the light vehicle specially car composition is higher, it is said
that most of the rich people travel this roadway.

9. Service Flow Rate
The equivalent hourly rate at which vehicles pass over a given
time interval less than 1 hour.
Significance
 Find out peak hour flow.
 Calculate directional distribution.
 Improvement of existing Road Capacity.

10. Service Flow Rate from Panthapath to Russel Square
0
200
400
600
800
1000
1200
1400
Group 1 Group 2 Group 3 Group 4
1122
804
1374
1164
PCU/hour
Group

11. Directional Distribution
 Percentage of Traffic flow in each direction.
 Helps to improvement of roadway facility.
From Our Directional Distribution Analysis
Panthapath to Russel Square = 55%
Russel Square to Panthapath = 45%

12. Average Daily Traffic
Volume during given time period (greater that 1 day) divided by
number of days in that period.
Importance
 Traffic flow Map.
 Flow Fluctuation Curve.
Magnitude of traffic volume.
 For planning, designing, traffic management, regulation &
maintenance.

13. Flow Fluctuation Curve
Shows fluctuation of % ADT in each hour.
29.133
17.799
27.682
25.384
35.771
26.358
20.558
17.311
0
5
10
15
20
25
30
35
40
8:30-9:30 9:30-10:30 10:30-11:30 11:30-12:30
Flow Fluctuation Curve
% ADT From Pathaptha to Russel Square % ADT Russel Square to Panthapath

14. THANK YOU