交叉口交通流仿真研究

针对交通网络中的交叉口车流具有连续时间特性，动态信号灯的切换具有离散事件特性的情况，以4相位单交叉口为对象，建立了1个4相位交叉口的混杂自动机模型，该模型中以车辆排队长度为连续状态变量描述连续车流动态，以信号灯状态为离散状态变量描述离散信号灯动态。在该模型的基础上分析了交叉口各个方向的输入、输出车流动态，采用CheckMate3．6工具箱进行仿真。仿真结果表明该模型不仅能够刻画交叉口车流的动态混杂特性，而且能够验证信号灯配时方案对车流疏导是否有效，从而为信号灯配时设计提供1种检验方法。

Traffic Flow Simulation for a Single Intersection

For the case that vehicle flow shows continuous behavior and traffic light exhibits discrete event behavior,a hybrid automata model of a four-phase intersection was given,in which the queue lengths are considered as continuous variables to represent the vehicle flow behavior of the intersection and the discrete event part represents the traffic light behavior.Based on the hybrid automata model,all directional vehicle flows were analyzed.Simulation completed with the help of the toolbox CheckMate 3.6 shows t...