Signal Coordination Control of Intersection Adjacent to Main Road Based on Hybrid Automata*

In order to alleviate the congestion of urban road network, the dynamic characteristics of the hybrid automaton model were analyzed in depth. According to the dynamic characteristics of phase difference of green wave between adjacent intersections, an improved hybrid system model of traffic signal optimization and coordination control was proposed through taking the minimum queue length of vehicles in each phase of an intersection within one signal period as performance index, so as to find the optimal phase conversion order and optimal green signal ratio for the coordinated control of traffic signals at two adjacent intersections under dynamic traffic conditions. Taking the intersection of Qingyang Road and Yongchang Road in Lanzhou City to the intersection of Qingyang Road and Jiuquan Road as the research object, the simulation results verify the effectiveness of the proposed method.