Variable Speed Limit on School Zone

Variable Speed Limit on School ZoneProject 1Melvin Wong Zheng Haon8699399Supervisor: Ashish Bhaskar

1

Variable speed limitsSpeed limits that changes in a specific area in different hours of the dayTo reduce speed of vehicle on the roadPrevent accidents

Usually used in School Zones7am- 9am 2pm-4pm

Traffic CongestionDemands of cars passing through a road has exceeded its capacitySocial impactLateStressfulEnvironmental ImpactNoise pollutionAir pollutionFuel consumption

Location BackgroundCavendish Road stretches about 7km3 schools along the same roadLoreta College, Cavendish State High school, Seton CollegeTraffic congestion is an issue during peak hours

MethodAIMSUN 6.1 was usedSimulation model was created3 traffic light was used to represent pedestrian crossingSimulation was run from 7-9am4 Different speed limits combination was usedThe data was collected and analyze using SQLITE

Combination of speed limitCombination A: 60km/hr before school zone, 40km/hr on school zone, 60km/hr after school zoneCombination B: 50km/hr before school zone, 40km/hr on school zone, 50km/hr after school zoneCombination C: 50km/hr before school zone, 40km/hr on school zone, 60km/hr after school zoneCombination D: 60km/hr before school zone, 40km/hr on school zone, 50km/hr after school zone

ResultCombination A and Chad the lowest density of 23 vehicles/ kmCombination A had higher average speed of vehicle of 48km/hr than C of 47.5km/hr

Combination B and D both had higher density of 27 and 24 vehicles/km lower average speed of vehicle of 41km/hr and 45km/hr compared to A and CCombination C was more favorablelower entry speed of 50km/hrhad similar result as A

Recommendation on Project 2Variable traffic light cycleDemands for road crossing varies through out the peak hours

Automated Radar or camera detection on pedestrian to find out appropriate traffic light cycleIncrease traffic flowIncreases green light seconds

Conclusion Combination C should be favorableLower speed limit entry to school zoneAccident risk can be reduced

Further Research should be done to improve Cavendish Road traffic condition