信号控制下的动态路段行程时间模型

摘要

The vehicles travel time was divided into multiple components, and the trajectories of vehicles driving in steady mode were classified and their travel times were considered respectively.A new dynamic link travel time model was proposed.This new model is simple and can be applied to forecast dynamic link travel time in real traffic network.An example of the analysis shows that, the link travel time is not only simply an increasing function of the traffic flow, but also affected by both the entry time and the signal control scheme.%通过对车辆在路段上所处的状态不同，将路段行程时间划分成多个组成部分，并分别研究各部分的计算模型，提出一种新的动态路段行程时间模型。这种新的模型计算简单，能够适用于实际交通网络中对动态路段行程时间进行预测计算。通过算例的分析表明，在信号灯的控制下，车辆的动态行程时间是一个间断函数，其不仅仅与路段流量有关，还与该车辆进入路段的时刻以及控制信号设置有很大关系。