基于分层序列的相邻信号交叉口控制系统动态优化模型

A Dynamic Optimization Model of Adjacent Signal Intersection Control System Based on Stratified Sequence

为了提高相邻交叉口信号控制系统协调控制的通行效用,根据周期时长、相位绿信比、相位差、协调相位延误、消散量特征和各入口方向车辆的流量特征,建立了相邻信号交叉口控制系统配时参数的双目标动态优化模型。通过分层序列法,对双目标动态优化模型进行了求解。结果表明:动态信号控制使协调相位直行车道的效用显著提高,当相邻交叉口间的路段长度分别为200,350,550 m时,动态信号双向协调相位控制直行车道的效用比固定信号的控制效用分别提高了14.47%,11.01%,7.91%;在相邻交叉口间的路段长度较短时,交叉口动态信号控制比固定信号控制的通行能力提高了约2.85%。

In order to improve the operational efficiency of coordinated control of traffic signal control system for 2 adjacent intersections, according to signal cycle length, phase green ratio, phase offset, coordination phase delay, features of dissipation quantity and vehicle volume of each entrance direction, a dual-target dynamic optimization model based on signal timing parameters of adjacent signal intersection control system is built. The dual-target dynamic optimization model is solved by stratified sequencing method. The result shows that （1） the dynamic signal control improved the efficiency of through lanes with coordinated phase significantly, when the length of road between 2 adjacent intersections is 200, 350, 550 m, the efficiency of through lane with dynamic signal 2-way coordinated phase is increased by 14. 47% , 11.01% , 7.91% respectively than that of the fixed signal control ; （2） when the length of road between 2 adjacent intersections is short, the traffic capacity of dynamic signal control is improved by about 2. 85 % than that of fixed signal control at intersection.