城市道路交叉口公交预信号控制方法及其应用研究

Bus Pre-signals Control Technology and Application at Urban Road Intersections

综述了公交预信号的国内外技术现状,提出城市道路交叉口公交预信号设置条件,给出了公交预置区车道布局方式,通过实验修正了公交专用候驶区长度计算模型,并给出了交叉口区域停车线、车道分布及公交优先检测器的布设。以上海市鲁班路复兴中路路口为应用对象,调查了公交预信号可实施条件,并计算了第二停车线设置位置,计算出车道灯先红先绿信号控制时间,论文基于PA-RAMICS仿真评估表明1 h内该路口公交车等待时间减少了28%,社会车辆平均等待时间增加了6%,达到公交信号优先的目的。

Bus pre-signals control is used to enable buses to move ahead of queues on the approach at signalized junctions.Firstly,the bus pre-signals technology at home and abroad was studied in this paper.Then,the pre-signal setting conditions around intersection were presented including vehicle lanes,traffic volume,buses frequency,etc.Bus exclusive waiting district layout was given and a length computing model was adjusted after experiments.Further more,the intersection stop line,lanes distribution as well as layout of bus priority detectors were put forward.Luban-Fuxin intersection was implemented after bus pre-signal conditions investigation.The second stop line was set and the signal timing with coordinated main control was calculated.The evaluation based on PARAMICS shows that the bus waiting time decreases by 28% while social vehicles delay increases by 6%.Thus,the goal of signal priority is achieved.