1111

Project presentationthe analysis and optimization of the signal timing for the LRT corridor along 111street

Group 10Members:Yongfeng Ge (Michael)Lintao CuiSaifi AzmiNovember 30, 2010

1outlineIntroductionHCS simulation result analysisSynchro simulation result analysisSpecial considerationConclusionExecutive summary

2

Introduction

Corridor 2 is along 111Street

The operation of Corridor 2 is seriously interrupted by LRT at a high frequency of 5mins during the peak hour

If considering both directions of LRT, it is a 2.5mins frequency interruption60AVE61AVE57AVE54AVE51AVE111Street

3

Introduction

60AVE61AVE57AVE54AVE51AVE60AVE61AVE57AVE54AVE51AVEEBL106352880EBT184569199207EBR2815728136WBL29313593WBT95375190118WBR902572386NBL692304092NBT134019961251NBR701153267SBL695033240SBT5021159468SBR7141831PHF0.940.950.890.860.87Traffic volume AM (vph)

4

Introduction

60AVE61AVE57AVE54AVE51AVETraffic volume PM (vph)60AVE61AVE57AVE54AVE51AVEEBL4622342EBT95533212206EBR645214105WBL842593203WBT59445210270WBR805880161NBL43441699NBT1322780666NBR368696193SBL9919630140SBT70913591211SBR5230691PHF0.880.90.890.940.94

5

Introduction

60AVE61AVE57AVE54AVE51AVECycle Length AM (s)60AVE61AVE57AVE54AVE51AVECycle (s)1361251501029860AVE61AVE57AVE54AVE51AVECycle (s)13612521710298Cycle Length PM (s)

6IntroductionObjectiveOptimization of signal timing for LRT corridor using simulation software

Synchrocorridor network HCS-single intersection

7HCS result analysisInput vehicle and pedestrian volume, heavy vehicles percentage, signal timing data etcsimulation and optimization

8HCS result analysisIntersection 113street & 60avenueAM-peak time analysisUnit of delay(sec/veh)ApproachIntersectionEBWBSBdelayLOSdelayLOSdelayLOSdelayLOSBefore optimization36.8D27.0C11.4B21.3CAfter optimization21.6C15.9B18.7B18.2B

9

HCS result analysisIntersection 113street & 60avenueAM-peak time analysisUnit of delay(sec/veh)ApproachIntersectionEBWBSBdelayLOSdelayLOSdelayLOSdelayLOSBefore optimization36.8D27.0C11.4B21.3CAfter optimization21.6C15.9B18.7B18.2BFurther optimization12.7B15.9B18.7B16.6BWe take the geographic flexibility into consideration

10HCS result analysisIntersection 111street & 57avenueAM-peak time analysisUnit of delay(sec/veh)ApproachIntersectionEBWBNBSBdelayLOSdelayLOSdelayLOSdelayLOSdelayLOSBefore optimization18.4B67.7E57.6E26.7C47.5DAfter optimization27.1C61.6E3.6A14.6B8.5ASemi-actuated control is used for the EB-WB movements

11HCS result analysisIntersection 111street & 57avenueAM-peak time analysisUnit of delay(sec/veh)ApproachIntersectionEBWBNBSBdelayLOSdelayLOSdelayLOSdelayLOSdelayLOSBefore optimization18.4B67.7E57.6E26.7C47.5DAfter optimization27.1C61.6E3.6A14.6B8.5AFurther optimization27.1C59.7E3.4A14.4B8.2AThe improvement is not significant, but I still consider using it because of the existence of public transit, route 9 and 55. The objective is also to provide priority for transit

12HCS result analysisIntersection 111street & 54avenuePM-peak time analysisUnit of delay(sec/veh)ApproachIntersectionEBWBNBSBdelayLOSdelayLOSdelayLOSdelayLOSdelayLOSBefore optimization18.4B67.7E57.6E26.7C47.5DAfter optimization23.1C31.7C6.6A4.3A8.5AWe change the phase plan for this particular intersection

13

Synchro result analysis

build the road networkInput vehicle and pedestrian volume, heavy vehicles percent, signal timing datasimulation and optimization

14Synchro result analysis

15Synchro result analysisBefore OptimizationAfter OptimizationImprovementTotal Delay (hr)27.417.436.5%Delay/Veh (s)109.971.435.0%Fuel Eff.(kpl)7.48.920.3%Avg Speed (kph)192215.8%Travel Time(hr.)41.931.923.9%Total Stops1524125917.4%AM peak hourNetwork performance analysisThe network performance improved significantlyLevel of ServiceIntersection60AVE61AVE57AVE54AVE51AVEBefore OptimizationBBDEDAfter OptimizationBBACC

16Synchro result analysisPM peak hourNetwork performance analysisBefore OptimizationAfter OptimizationImprovementTotal Delay (hr)35.613.661.8%Delay/Veh (s)148.749.466.8%Fuel Eff.(kpl)6.68.427.3%Avg Speed (kph)162343.8%Travel Time(hr.)49.22941.1%Total Stops146314292.3%Level of ServiceIntersection60AVE61AVE57AVE54AVE51AVEBefore OptimizationBEDBDAfter OptimizationABBCB

17Synchro result analysisPM peak-hour performance analysisAt intersection 111street & 51avenueBefore OptimizationAfter OptimizationTotal Delay (hr)10.55.0Delay/Veh (s)75.532.8Avg Speed (kph)611Travel Time(hr.)12.16.8Signal Delay41.318.7v/c Ratio0.890.90Avg Queue (m)49.830.3Level of ServiceDB

18

Special consideration--pedestrian safetyField observation-More than 50% pedestrians cross the 111street illegally

Reason-the waiting time is too long; from 2 to 4 minutesMaximum limitation-study indicates 50 seconds of waiting

19

Special consideration--pedestrian safetySolution-pedestrian phase plan

Waiting interval decreases20

Special consideration--pedestrian safety

Install an automatic door, which is locked when the detector is called by the arrival of the LRT and is cancelled when the LRT passed To prevent pedestrians, especially children from climbing, the door is better to be taller than 1.4mProvide the safe standing zone for the crossing pedestrians at the side of the LRT trailIt is a better solution than doing nothing, pedestrian bridges and underpassOther related potential issues21ConclusionThe simulations give us some clue about how to improve the performance of the intersections at individual and network levels, and the optimization is applicable

Because LRT operation mechanism is not known, the simulation analysis is just preliminary result. Further research is needed

Pedestrian safety along the LRT corridor also needs attention

Officers of City of Edmonton have a lot of work to do

22Executive summaryWe use Excel macro command to do the data collection for volume, headwayIn HCS, we try to improve performance by increasing lane numbers, changing phase plan and using semi-actuated control methodFor 111Street & 51AVE intersection, pedestrian safety is consideredIn Synchro, we use 4 steps to run the optimization, as indicated in the Guide

Highlight points23

Thank you!Group 10Members:Yongfeng Ge (Michael)Lintao CuiSaifi Azmi