平面道路错位交叉口的信号配时优化方法研究

The study of signal optimization method in at-grade staggered intersection

错位信号控制交叉口由于其几何拓扑结构的特殊性,导致不能够用常规的单点信号控制方法进行信号配时。针对错位交叉口的信号配时问题,提出两种可能的配时方法。其一为将两个交叉口作为一个交叉口来处理进行信号配时的方法,其二为将两个交叉口进行绿波协调控制的方法。以上海市某错位交叉口为应用案例,利用VISSIM仿真软件对上述两种方法进行对比分析。以车均延误、排队长度、通行能力和停车次数为指标,综合分析了两种方法各自的适用性。

The signal control of staggered intersection can't use common signalpoint control method for its particular geometry topological structure.The paper presents two possible signaling methods,one is taking two intersections as one to signal,and the other is applying green wave coordination control method.In the case of a staggered intersection in Shanghai,this paper analyzed two methods applicability using indexes of delay average car,queue length,capacity and stops by VISSIM software.