Evaluation of Traffic Operation Benefit from Signal Timing Optimization of Dynamic Traffic Network

Traffic operation benefits from coordination of regional intersection signal timing through Synchro and Q-paramics.Unreasonable signal timing is one of the important reasons which reduces the efficiency of traffic operation,and a typical traffic jam zone in Changchun City was selected as the study area.In the analysis of existing signal timing problems,synchro was used to establish and conduct the main signal timing optimization.Control delay,stops,95% queue length of the three parameters were selected to evaluate the changes of traffic operation states in 15 signalized intersection's entrances,and before and after signal timing optimization of overall regional traffic operation were compared.The results show that the signal timing optimization can improve the operational status of the main intersection entrance,and can improve the opertating speed more than 14%,and can be reduced more than 25% of the delay time.Conclusion from the coordination of regional intersection signal timing based on the status of its overall optimization can improve regional traffic operation efficiency based on no change in the existing transport infrastructure.