The document analyzes the performance of Nagavara Junction in Bengaluru using SIDRA INTERSECTION software. It provides inputs on the layout and traffic volumes collected at the four-way signalized intersection. The software output includes the level of service, degree of saturation, delay times and queue lengths. The analysis finds the current intersection performance at LOS F, indicating high congestion. It concludes that changing the signal timing by increasing the cycle length and phase times could help improve traffic flow and increase the level of service for commuters.

1. Under guidence of
Ms. Challa Prathyusha
PERFORMANCE EVALUATION OF
NAGAVARA JUNCTION USING SIDRA
INTERSECTION SOFTWARE
Submitted by,
Pavani N K (R17MTE21)
Ramyashree S (R17MTE25)

2. Contents
Introduction
Input
Output
Conclusion
Referance

3. INTRODUCTION
INTERSECTION
Allow the change
of route directions
of traffic flows.
Traffic control
systems are
capable to
reduce delays
and crashes on
intersection
Problem
of delay
still occurs
An area which
shared by two
or more roads.

5. SIDRA
• Estimate of capacity and performance characteristics
• Analyze and optimize the intersections
• Determine signal timing
• Carry out a design life analyze for traffic growth

6. Advantages of using sidra
• Use the parameter sensitivity
• Use a lane-by-lane analysis method
• Consistent with the US Highway capacity manual
• Provide a Excel application to support model
comparison
• Estimate operation cost , fuel consumption , co2 &
other emission

7. Study objective
•The main objective of the Study is to prepare low cost
solutions to an existing intersection

8. Study area
The intersection is located in Nagavara junction
North side :Hebbal road
South side : KR Puram
West side :Shivajinagar road
East side :Thanisandra road

9. CASE STUDY OF NAGVARA JUNCTION BY SIDRA
INTERSECTION
The intersection is located in Nagavara junction
• Nagavara junction is a four phase signalized intersection
which has meeting junctions of a Hebbal road on north side,
thanisandra road in the east , shivajinagar road on the south
side and Kr puram road towards south . For the performance
evaluation of nagavara intersection like the Level of service,
Degree of saturation, delay , queue length, gap acceptance
etc using SIDRA INTERSECTION software

10. Input Part of sidra intersection
Software

11. Layout of Nagavara junction

12. NAGAVARA JUNCTION
KR Puram road Hebbala side

13. NAGAVARA JUNCTION
Thannisandra roadShivajinagar road

14. Creating a new site and select an intersection
First, to create our site, we
select signals type
according to our case study

15. INTERSECTION
We use the Intersection input dialog to establish the basic
intersection configuration

16. To Insert or delete an
intersection leg we
should just click the leg

17. Title: Four way intersection/grop 7

18. Intersection
ID: NAGVARA

19. Signal analyze method: fixed-time/pretimed

20. These data apply to
intersection as a whole.
Peak Flow Period : 15 minutes
Unit Time for Volumes: 60 minutes

21. Geometry Input dialog
The Geometry input dialog is used to configure approach and
exit lanes, modify movements and insert other characters

22. Geometry Input dialog (Lane & movements
tab)
we should click a
desirable leg to select it
To select a desirable lane, we
should just click the lane

23. we should click a
desirable leg to select it
We can allocate
desirable movements by
clicking these buttons to
the selected lane

24. we should click a
desirable leg to select it
To specify a Median for the
selected leg, we should click the
Median check box and then
insert the width of Median

25. we should click a
desirable leg to select it
In this boxes we can
input lane type, short
lane, and lane length

26. Volume Input dialog
We input the collected
volume data for the selected
direction according to
separate LV & HV method

27. Figure of Volume Summary (volume summary node)

28. Path data dialog
We insert MOVEMENT PATH
DATA for the selected directionFor example for our site,
approach cruise speed is 70km/h
Negotiation Speed, Negotiation Distance, and
Downstream Distance will be calculated by the
program

29. Movement Data input dialog
The defaults of
program for Movement
data are Accepted

30. Priorities input dialog
Priorities dialog establishes Opposing movements
for the selected movement
Select movement to be
defined as opposed
movement
Click desirable movements
to define them as
opposing/not opposing
movements

31. Gap-acceptance data dialog
For GAP-ACCEPTANCE DATA
We give the default values to the
program

32. Phasing & Timing input dialog
In Phasing & Timing input dialog
We use command buttons to edit
We must click this box in
order to designate it as the
Current Sequence , Which
is analyzed by the program

33. Clone Sequence button is used
to create a new Sequence for
editing

34. The NAGAVARA Intersection is a Four Phase Intersection
Clone Phase button is used to
create a new Phase for
editing

35. For Vehicle Movement Timing Data
we accept the defaults

36. In Phase Data
dialog, we insert the
Phase Time for each
phase

37. Model Settings input dialog
The parameters of MODEL SETTING
affect the results significantly.
However, the defaults of parameters are
appropriate generally

38. Output Part OF SIDRAINTERSECTION
Software

41. Lane summary

42. Movement summary

43. Phasing Summary

44. Level of Service
A= Free flow B=Reasonably
free flow C=Stable flow
D=Approaching unstable flow
E=Unstable flow
F=Forced or breakdown flow
LOS Signalized
Intersection
Unsignalized
Intersection
A ≤10 sec ≤10 sec
B 10-20 sec 10-15 sec
C 20-35 sec 15-25 sec
D 35-55 sec 25-35 sec
E 55-80 sec 35-50 sec
F ≥80 sec ≥50 sec

45. Level of service

46. Degree of saturation

48. Queue length

49. CONCLUSION
• Performance evaluation of nagavara junction was performed
using sidra intersection -5 and the LOS of the intersection
was found to be F
• LOS-F means that there is high congestion in the junction and
there was low comfort and convenience to the commuters
travelling in this route

50. • So in order to increase the LOS and giving good traveling
experience to the road users we have to design the signal by
increasing the cycle time which can be done by
• Finding the optimum cycle length using websters method
• By user defined cycle time by trail and error method
• By user given phase time by trail and error method
comparing with the practical signal timing

51. REFERENCE
• Indian Road Congress “IRC -93:1985, “Guidelines on
design on installation of road traffic signals.” IRC New
Delhi.
• Indian Road Congress “I.R.C:106-1990, Guidelines For
Capacity Of Urban Roads In Plain”
• Indian Road Congress “I.R.C:9-1972, “Traffic Census”
• Sidra intersection input guide

52. THANK YOU