基于综合通行效率最优的快速公交信号优先控制方法

BRT Signal Priority Control Method Based on Optimal Comprehensive Traffic Efficiency

为提高快速公交的通行效率,降低公交信号优先对非优先相位社会车辆的负面影响,提出一种基于综合通行效率最优的快速公交信号优先控制方法.以行人安全过街需求、社会车辆最低通行需求为约束条件,建立非优先相位最小绿灯时间需求模型;依据快速公交到达交叉口时刻所属相位,提出4种信号优先控制模式,构建快速公交优先相位的信号控制模型;以常州公交B1路途经的通江中路-太湖中路交叉口为案例,利用VISSIM检验所提方法的实施效果.结果表明:相比传统信号优先控制方法,所提方法能够在影响非优先相位较小的条件下,有效提高快速公交的通行效率.

In order to improve the traffic efficiency of BRT and reduce the negative impact of bus signal priority on non-priority phase social vehicles,a method of BRT priority control based on optimal traffic efficiency is proposed.Based on the safety of pedestrian crossing and the minimum traffic demand of social vehicles,the nonpriority phase minimum green time requirement model is established. According to the phase of the BRT arrival intersection time,four signal priority control modes are proposed to construct the BRT.The signal control model of the priority phase is used. Taking the intersection of Tongjiang Middle Road and Taihu Middle Road of B1 bus line in Changzhou city as an example,the implementation effect of the proposed method is verified by VISSIM.The results show that the proposed method can effectively improve the traffic efficiency of BRT under the condition of less affecting non-priority phase compared with traditional signal priority measures.