十字交叉口的单口放行与对称放行相位设计方法对比研究

十字交叉口是城市道路中最典型的交叉口类型,其相位设计方法的优劣直接影响交叉口的服务水平高低。以广东省东莞市虎门大道-连升路十字交叉口为例,比较单口放行方式和对称放行方式2种相位设计方法的特性,并通过Vissim交通仿真建模,分析对比在高峰、平峰、低峰等3种交通需求下2种相位设计方法的平均延误时间、排队长度、停车次数等交通信号控制性能指标优劣。仿真结果表明,对十字交叉口而言,交通流量不均衡时宜采用单口放行相位设计方法,交通流量均衡时宜采用对称放行相位设计方法。 

A Comparative Study of the Phase Design Method of Intersection between Each Phase for an Entrance and Symmetric Phase

Intersection is the most typical type of crossing roads in the city ,whose design method of phase will in-fluence service level of the intersection directly .This paper takes Humen-Liansheng intersection as an example ,compares the characteristics of each phase for an entrance and symmetric phase ,and analyzes the traffic signal control performances of these two kinds of phase methods through the Vissim traffic simulation model under the peak traffic demand ,flat peak traffic demand and low peak traffic demand ,such as the average of delay ,the average of queue length ,and the average of stops .The simulation results show that the each phase for an entrance is suitable for the intersection whose flows are im-balance;on the contrary ,the symmetric phase is suitable for the intersection whose flows are balance .