城市交叉口交通信号优化控制方法

摘要

With the popularity of vehicles,the control of traffic signal at the intersection is the main mean to ensure the traffic capacity of vehicles.Using the traditional signal control meth-ods can not realize adaptive control for intersection's traffic signal.Due to the traffic congestion in morning and evening rush hour,an optimal control method of traffic signal in urban inter-section is proposed.The real-time monitoring of traffic flow was conducted in the intersection through the Pareto front drive guide method,completing the traffic signal forecast of road data information transmission and control system.By using the delay packet control mechanism,the system realized the control of the signal packet for the blocking vehicles at intersections to re-duce the vehicle queuing and ease the traffic congestion pressure.The simulation results show that the proposed traffic signal optimization control method can effectively control the vehicle queue at the intersection.It can meet the practical needs and have a strong application.%随着汽车的逐渐普及，交叉路口交通信号的控制成为保障车辆通行的主要手段。采用传统信号灯控制方法不能对交叉口的交通信号进行自适应控制，在早晚上下班高峰时间段容易造成交通拥堵。为此，提出一种城市交叉口交通信号优化控制方法。通过Pareto前沿驱动引导，预先对路口交通流量进行实时监测，完成道路数据信息传输控制系统对交通信号的预测，采用延迟分组控制机制，对交叉路口的堵塞车辆进行信号分组分别控制，以减少车辆排队，缓解交通堵塞压力。仿真结果表明，提出的交通信号优化控制方法能有效对交叉路口车辆队列进行调度，满足实际需要，有较强的应用性。