基于时空优化的单点交叉口公交被动优先控制方法

为了最大可能地降低对公交车辆提供信号优先时对社会车辆运行产生的不利影响,研究了信号控制交叉口1个进口道的通行空间分配(车道功能划分)与通行时间分配(绿信比分配)的相互制约和转化关系,在此基础上提出了考虑时空资源组合优化的被动优先模型。算例分析结果表明:该模型能够在对社会车流影响较小的情况下,显著降低公交车辆车均延误;同时,为降低公交优先对社会车流总体运行状态的影响,在确定公交优先的权重时,需要考虑不同相位的机动车流量间及其与公交车流量的对比关系。

Transit Passive Priority Control Method Based on Isolated Intersection of Optimization of Time-space

In order to decrease negative influence of signal priority supply of transit on vehicle running to maxmial extent,relations of mutual limitation and transition between running space allocation and running time allocation at an approach of signal control intersection were studied.Then,a model of transit passive priority was proposed considering optimization and the combination of time-space resource of intersection.The numerical test results show that the model can reduce average delay of transit vehicles dramatically under a little influence on vehicle flow,meanwhile,the comparative relationship between vehicle volume of different phases and transit vehicle volume should be considered when the weight of transit vehicle priority is decided for decreasing the influence of transit priority on total vehicle running state.