路网中公交信号优先策略的定性分析

Qualitative Analysis of Transit Signal Priority in Road Network

提出了公交车辆运行在社会车辆决定的长周期下是其延误的重要原因;非关键交叉口选择关键交叉口的长周期导致绿灯时间空闲,从而使得公交信号优先有了可以调节利用的绿灯时间的观点。通过推理的方式证明了公交信号优先效益不具有简单的叠加性的特征。并对各种公交信号优先策略的特点进行了比较,做出了关键交叉口公交优先可能导致交叉口周期变长,进而整体上破坏公交优先效益和社会车辆效益的推断。

In signal control intersection,buses are controlled by a longer signal cycle decided by other vehicles is the main reason of buses delay.Because other intersections use a longer signal cycle decided by key intersection,there is some unused green time that can be allocated to buses.It is inferred that transit signal priority effect cannot be simply added.Compared different kinds of transit signal priority strategies,the cycle may become longer in key intersections,and destruct the efficiency of buses and other vehicles in road network.