信号控制系统若干问题探讨

Discusses of Some Questions about Signal Control System

本文通过交叉口延误的分析,阐述了道路网密度和路网车辆行程时间之间的关系,提出了信号控制系统中信号控制布点和交通组织的原则。此外,针对城市中经常出现的交通流方向特征的时变现象,通过分析对比信号控制相位设计和可变车道控制对提高交叉口利用效率的作用,得出可变车道控制在某些特殊情况下具有不可替代的作用的结论。

Using the analysis of delay at signalized intersection, the relationship of density of street network and vehicle travel time is analyzed, and the principle of distribute of signalized intersections and traffic management measures is concluded. Further more, because the direction character of traffic flow in urban is change in time of day, the methods of signal control phase design and lane use control in contribute to improve the effectiveness of intersection are analyzed, it indicate that the lane use method is not replaceable in some particular situation.