信号交叉口车辆拖延行为分析

Study on Dragging Behavior of Vehicles at Signalized Intersections

在分析HCM2000 Back of Queue模型计算值偏大的原因中,提出了信号交叉口车辆拖延行为的概念,分析了拖延行为导致Back of Queue模型偏大的2种情况。建立了车辆拖延行为3阶段模型,重点推导了拖延行为模型中,低匀速行驶的时间与不发生拖延行为的正常状况下的停车等待时间之间的关系。根据统计分析,确定低匀速行驶的速度和时间的取值范围,在此基础上推导出车辆发生拖延行为的最大时间间隔Tmax,以及车辆发生拖延行为的条件。讨论了Tmax在考虑拖延行为的排队模型中的应用,是对考虑拖延行为的Back of Queue模型研究的进一步深化。

The concept of dragging behavior of vehicles at signalized intersectioas was presented in the research for the reasons of the overestimation of HCM 2000 Back of Queue model. There were two cases that led to the overestimation resulting from dragging behavior. A 3-phased dragging behavior model was provided and the emphasis was put into the calculation of the relationship between the slow-driving time and the waiting-time.The range of the velocity and the time of slow-driving process could be determined through field survey and statistical analysis. The maximum time-interval Tmax for dragging behavior occurrence was calculated and an example was given to show its application in the Back of Queue model based on dragging behavior.This paper is an in-depth study on the revised Back of Queue model.