多相位交叉口公交信号优先感应控制方法研究

Priority Induction Control Method for Bus Signals at Multi-phase Intersections

针对公交车到达交叉口时其通行方向相位所处的情况,提出相应的绿灯延长与红灯缩短两种公交信号优先感应控制策略。基于车辆到达与离去的车辆停车与消散原理,对两种信号优先策略实施前后的各相位车辆总延误变化情况进行分析,再结合公交车与社会车辆的平均载客量进行整个交叉口的人均延误变化情况分析,基于人均延误减小的原则,求出绿灯延长或红灯缩短的理论时长,综合考虑影响相位的最短绿灯时长,确定能够满足各相位通行需求又能实现公交优先的信号控制方法,最后通过案例进行计算验证,结果表明延误计算模型与公交优先时点判断模型均具有较好的适用性。

According to the situation of the traffic direction phase when the bus arrives at the intersection,the corresponding green light signal extension and red light shortening are used to control the bus signal priority sensing strategy. Based on the vehicle parking and dissipating principle of vehicle arrival and departure,The total delay of the vehicle in each phase before and after the implementation of the signal priority strategy is analyzed. Combined with the average passenger capacity of the bus and the social vehicle,the change of the per capita delay of the entire intersection is analyzed. Based on the principle of reducing the per capita delay,the green light is obtained. The theoretical length of the extension or red light reduction,comprehensive consideration of the minimum green light duration affecting the phase,determination of signal control methods that can meet the traffic demand of each phase and bus priority,and calculation verification through case are all discussed. The results show that the delay calculation model and bus priority,the time-point judgment models all have good applicability.