An Area-wide Traffic Signal Coordination Method Based on the Deep First Search of Intersection's Importance

Kurzfassung

The continuous expansion of urban road network challenges the urban traffic control system seriously. This paper analyzes the traffic correlation between the intersections and the traffic flow parameters that represent the correlation, so as to clarify the topology of the road network. The intersection importance estimation model is built based on the road network topology. Then the area-wide traffic signal coordination method is designed by the deep first search of priority order. This method establishes a balanced network traffic flow signal coordination control method from a global perspective. At last, the proposed method is compared with the signal control scheme optimized by Synchro 7. The micro-simulation program SUMO is used to evaluate the control effectiveness. The simulation result shows that the proposed method can improve signal control performance effectively.