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。
In the state of intersection with very complicated traffic flow running, combining with the basic condition of setting waiting area, the differences of capacity models and delay models with and without waiting area for through vehicles are investigated, the changes of signal control parameters such as green light interval time and effective green light time before and after setting waiting area for through vehicles are analysed, and the addition of capacity and the reduction of delay are derived accurately by mathematical formula. Finally, combining with the example of intersection, the traffic operation efficiency is analyzed through simulation. The result shows that （ 1 ） generally, under the condition of high volume ratio and saturation, setting waiting area for through vehicles can utilize the spare space of intersection adequately, improve the use efficiency of straight lanes, and realize reciprocal transformation of time and space maximally, not only improve the capacity of straight lanes and decrease delay per vehicle, but also improve the capacity of intersection to some extend, decrease delay of the whole intersection, which verified the validity and applicability of the model.
出处
《公路交通科技》
CAS
CSCD
北大核心
2015年第7期120-126,148,共8页
Journal of Highway and Transportation Research and Development
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)
