交通事故占道对城市道路通行能力影响的研究

On the Influence on Urban Road Traffic Transit Capacity Caused by Roadway Taking-up of Traffic Accident

传统的排队论单纯使用需求量和通行能力关系推算排队长度,因而估算结果与实际出入很大。本文结合车辆波动理论,Greenshields流—密模型考虑上游路口信号灯的影响并运用车流波动理论分析构建车流波动排队模型,主要体现了一个稳定的交通流受突发交通事故的变化情况。

The traditional queuing theory only uses the relationship between demand and transit capacity to calculate queuing length, so the discrepancy between estimation results and the reality is very large. Combined with traffic volume undulation theory, Greenshields flow-density mode, this paper considers the influence by upstream intersection signals and uses traffic volume undulation theory to analyze and build the traffic volume undulation queuing model. The model mainly embodies changes of a stable traffic flow caused by the sudden traffic accidents.