Traffic Signal Optimization Based On Game Models Of The Interference Of Turning Traffic In The Intersection

Based on the characteristics of mixed traffic in China,the phenomena caused by “vehicle-vehicle interference” and “human-vehicle interference” are very common.With the change of the ideology of "people first" in traffic design,the phenomenon has gradually gotten attention at the intersection.Now the law in China stipulates " motor vehicle later,pedestrians first ",the legal protectes pedestrians’ rights in some degree.but when the number of pedestrians and turning motor vehicles are very large,the effect of the law is not very good.Therefore,it is very necessary to explore a traffic signal control scheme that can solve the interference of pedestrian and turning motor traffic and is applicable to China.On the basis of the existing research results,this paper discusses the signal control scheme that is applicable to China.The main work is reflected in the following aspects.(1)Through the processing of the intersection video,the data such as the speed,arrival gap of turning motor vehicle and pedestrians are analyzed.thereby the interference coefficients under various types of interference are statistically counted.According to the basic data of acceptance gap and rejection gap the traffic flow,statistics of various types of interference critical gap is counted.(2)Through the single-factor impact analysis of SPSS,it is determined that the number of pedestrians in waiting areas,waiting time of pedestrians,motor vehicle speed,and the gap of vehicle headway affects the decision of pedestrian crossing motor vehicles;the number of pedestrians in interfering areas,the speed of motor vehicles before passing and the gap of pedestrian flow affects the decision of motor vehicles crossing pedestrian.(3)The game model of right-turn motor vehicle with pedestrian crossing is established.It is determined that the {first-walker smashing,and the late-walker squeezing} is the only Nash equilibrium solution.Based on this,an adaptive signal control system for a right-turn vehicle with pedestrian crossing is established.(4)A three-party game model of left-turn cars,forward-facing cars,and pedestrians is established,(straight-forward vehicles and pedestrians first,left-turning cars later)is determined to be the only optimal solution for the system.For the optimal decision of the system,it is proposed to set the lag phase of the left-turn car to avoid the grapping behavior of the left turn car in the early phase of the green light of straight-forward vehicles.In this paper,the game model is used to analyze the interference mechanism of right and left pedestrians and street pedestrians,and the signal phase scheme for solving the intersection interference is proposed from the perspective of system optimization.It is of a great significance to solve the problem of mixed traffic in China.