交叉口信号控制方案选择方法的研究

目前，在国内大多城市中，交叉口信号配时方案主要有传统四相位控制方案、单口四相位控制方案和搭接相位控制方案。由于多数交叉口信号控制方案选择不合理，造成交叉口通行能力低下，交通拥挤严重。结合交叉口流量，对这三种控制方案的优点和不足进行分析对比。在此基础上，提出了一种基于车道组流率比的多种信号控制方案的优选方法。最后通过算例，证明了该方法的合理性和可行性。利用该优选方法，可以从定量分析的角度选择合适的信号控制方案，为下一阶段信号配时奠定基础。

Research on Signal Control Scenario Selection in Intersections

At present, cities in our county usually employ the following three different scenarios for intersection signal phasing, namely, the traditional 4-phase scenario, the approach-specific 4-phase scenario, and the overlapping-phase scenario. An inappropriate selection of signal phasing scenarios can lead to a low capacity, as well as traffic congestion of the intersection. Through an analysis of the pros and cons of the above three scenarios in terms of traffic volumes of an intersection, this paper proposes a signal phasing scenario, i.e, a multi-phase control scenario based on flow-rates of lane groups. An example shows the rationality and feasibility of the methods, and also illustrates that the method can be used to sclect appropriate signal phasing scenarios in a quantitative manner, which lays a sound foundation for signal timing, the next step of intersection signal control design.