Study on Traffic Signal Timing Optimization for Single Point Intersection Based on Synchro Software System
Jianmin Xu · Journal of Highway and Transportation Research and Development · 2009
First,the existing research result on signal timing model was introduced systematically.Then,the signal timing optimization model,PDM percentile delay method model,queue length calculation model,parking rate calculation model,capacity calculation model and level of service(LOS) model in Synchro software system were analyzed.Taken the North Tianhe Road and the East Tianhe Road intersection in Guangzhou for example,the real-time phase and phase sequence of the intersection were optimized completely with the comprehensive performance indicator which consists of delay,parking rate and queue length.The maximum V/C ratio may decrease from 1.24 to 1.02,the average control delay may decrease from 85.8 s to 60.3 s and the LOS may be improved from Level F to E after Synchro system optimization.The experimental results show that the application of Synchro system can improve the controlling effect of the intersection effectively.