基于Synchro仿真的交叉口渠化与信号配时协调优化

Coordinated Optimization of Channelization and Signal Timing of Intersection Based on Synchro Simulation

考虑到交叉口渠化对信号配时的影响,提出一种信号配时协调优化方法。第一阶段,在交通调查基础上,利用Synchro仿真软件对现有交叉口配时方案进行优化;第二阶段,根据第一阶段配时优化结果和交叉口现状提出合理的渠化改进方法,并进一步利用Synchro仿真软件得到新的优化配时方案;最后,从两个方案中选择较优的作为最后方案。典型交叉口案例表明,本协调优化方法可在较少渠化的基础上提高交叉口服务水平,尤其适用于拥挤的交叉口。

Due to the effects of intersection channelization on signal timing, a coordinated optimization approach was proposed. First, signal timing optimization of the current intersection was given based on traffic survey;and second, the channelization was modified according to the mentioned signal timing design and the current situation of the intersection, and new optimized signal timing scheme was obtained by using Synchro simulation software;and last, the final scheme was gained from the two schemes. The result of a practical example shows the given approach can improve the service level of the intersection with a little channelization modification, and especially applies to the crowed intersections.