交叉口直行待行区设置研究

发布时间：2018-01-18 11:12

本文关键词：交叉口直行待行区设置研究　出处：《公路交通科技》2015年07期 　论文类型：期刊论文

【摘要】：在交叉路口极其复杂的交通流运行状态的情形下,结合待行区设置的基本条件,深入研究有无直行待行区通行能力模型和延误模型的异同。分析了设置直行待行区前后绿灯间隔时间和有效绿灯时间等信号控制参数变化的情况,并精确运用数学公式推导出通行能力的增加值以及延误时间的减少值。最后结合实例交叉口,并通过仿真进行交通运行效率分析,结果表明:一般在流量比或饱和度比较大的情况下设置直行待行区,充分利用路口的空间闲置区域部分,提高直行车道的利用率,最大限度达到时间和空间的相互转换的目的,从而不仅提高直行车道的通行能力,降低车均延误时间,而且还在一定程度上提高交叉口的通行能力,减少了整个路口的延误,验证了模型的正确性和适用性。
[Abstract]:In the case of extremely complex traffic flow at intersection, the basic conditions of the waiting area are combined. The similarities and differences between capacity model and delay model are studied. The change of signal control parameters such as green time interval and effective green time before and after setting the straight line waiting zone is analyzed. The added value of traffic capacity and the decrease of delay time are deduced by using mathematical formula accurately. Finally, the traffic efficiency is analyzed by simulation combined with an example intersection. The results show that under the condition that the flow ratio or saturation is relatively large, the straight line waiting area is set up to make full use of the idle area part of the intersection space, and to improve the utilization ratio of the straight lane. To maximize the purpose of time and space conversion, thus not only improve the capacity of the straight lane, reduce the average delay time, but also improve the capacity of intersection to a certain extent. The delay of the whole intersection is reduced, and the correctness and applicability of the model are verified.
【作者单位】：北方工业大学城市道路交通智能控制技术北京市重点实验室;
【基金】：科研基地建设-首都世界城市顺畅交通协同创新中心-参与单位(PXM2014_014212_000020) 学科建设-国家特殊需求-城市道路交通智能控制人才培养项目(PXM2013_014212_000031) 研究生培养-研究生教育-产学研联合培养研究生基地(PXM2014_014212_000032)
【分类号】：U491.23
【正文快照】： 0引言城市道路信号交叉口是城市道路的重要节点,在有限的空间里,不同方向的交通流在此汇集,使交叉口的交通组织错综复杂,是影响道路通行效率的重要环节[1-2]。而待行区的设置是缓解交叉口拥堵的有力措施之一,基于待行区的诸多研究,如尚德申主要研究待行区设置方法和以及设置最

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