基于预信号的交叉口信号优化控制方法仿真

为充分利用交叉口有限的进出口车道资源,提升交叉口时空资源利用率及通行能力,采用基于预信号的交叉口几何设计方法,构建了以最大化通行能力为目标的交叉口车道划分模型及配时方案求解模型。在此基础上考虑车辆随机到达性,提出了基于实时交通需求的预信号动态控制方法。最后,基于实例,通过对比不同信号控制方案下的运行情况,利用VISSIM仿真平台进行验证,仿真结果表明:相较于传统的交叉口控制方法,所提出的车道划分模型及信号动态控制算法可有效提升交叉口通行能力并减小延误。

Simulation of Intersection Signal Optimization Control Method Based on Pre-Signals

To fully utilize the limited amounts of entrance and exit lanes,improve the utilization of space-time resources,and increase the capacity at intersections,a lane allocation model and a signal timing model were proposed with the usage of pre-signal based geometric design method for intersections,which manages to maximum the intersection capacity.Further,considering the random arrival of vehicles,a dynamic pre-signal control method was generated to deal with real-time traffic demands.Finally,based on the examples,by comparing the operation under different signal control schemes,the simulation results using VISSIM demonstrate that the proposed lane allocation model and dynamic signal control method significantly outperform convention method in terms of intersection capacity and traffic delay.