基于综合投影的交叉口交通状态判别方法

交叉口交通状态的准确识别是实施交通信号控制策略的前提和基础，针对交 通状态识别问题，提出了基于综合投影的交叉口交通状态判别方法.首先，通过研究交叉 口各相位流量与绿信比之间的内在联系，建立流量和绿信比关系图，并从两相位控制交 叉口入手重点分析交叉口的交通状态；通过时间-排队图确定在不同交通状态下交叉口 各相位排队情况，从而与交通状态相匹配.其次，在两相位控制交叉口的基础上，通过投影 和反投影提出综合投影法，并最终建立适合多相位控制交叉口的交通状态判别方法.最 后，用该方法对实际路口的判别，验证本文方法的可行性和有效性.

Intersection Traffic State Distinguish Method Based on Comprehensive Projection

The accurate identification of intersection traffic state is the premise and basis for the implementation of corresponding control strategy. According to the problem of traffic state identification, the intersection traffic state distinction method that based on comprehensive projection is proposed. At first, by studying the inner link between each stage flow and split of intersection, traffic and split diagram is established. And from the perspective of the two stage control of intersection focus on the analysis of intersection traffic state, through time- line diagram to determine each phase under different traffic states intersection line up, so as to match the traffic state. The second, on the basis of the two phase control intersections, through the projection and the projection comprehensive projection method is put forward, and a traffic state distinction method that suit multi- stage control is established. At last, the distinction of the actual intersection verified the feasibility and effectiveness of this method.