Traffic Organization Method Of Unsignalized Intersection Based On C/AVs Location Service

The rapid development of vehicle networking technology is a hot spot in the field of traffic control and automatic driving.Under the environment of the Internet of vehicles,the vehicle can perceive the change of each other through the information interaction between people,cars and roads,which helps the coordinated traffic between vehicles in different directions at the intersection.Compared with the traditional signalized intersection,it can give full play to the advantages of the Internet of vehicles,so as to improve the traffic safety and efficiency of the intersection.Based on location sharing technology and method,a traffic control method of unsignalized intersection is put forward by exploring the traffic organization problem in the control area at the intersection.First of all,explore the setting of intersection control areas.According to the theory of location sharing on the internet of vehicles,considering the traffic flow and the average speed,the control area is set near the intersection,and the size,feasibility and applicability of the set area are studied.By making the basic process of unsignalized intersection control strategy,the control area is divided into three parts: pre-scheduled area,core control area and free-running area.The control and communication modes of vehicles entering the pre-ordered area and core control area are mainly studied.Secondly,a traffic organization model based on location sharing is proposed.According to the rules and operational characteristics of traffic at unsignalized intersections,traffic conflicts are detected and analyzed.Then,according to the traffic conflict,a judgment model of vehicle traffic rights is established to determine the sequence of vehicles entering the core control area of the intersection.For the vehicles in the core control area,with the aim of eliminating cross-conflicts and confluence conflicts,the vehicle speed guiding models under different traffic conditions are established respectively.On this basis,a multiple-vehicle interaction and coordinated traffic strategy at unsignalized intersections is proposed.Lastly,simulation analysis verifies the feasibility of the new model.Take the actual investigation of the signalized intersection as the simulation object,use VISIIM to simulate it and use the simulation platform based on VISSIM to simulate the unsignalized control intersection.In the simulation,except for the intersection control strategy,the other simulation parameter values are the same.On this basis,the paper contrasts travel time data under different inlet channel flow conditions of the two control strategies to analyze the capacity and size of the car under a networked environment at the intersection of the traditional environment and determine the advantage of a control strategy unsignalized intersections under the environment.The results show that the traffic organization method proposed in this paper has improved the operating efficiency by 46%,the average travel time is reduced by 6.54 s,which is not only superior to signal control,but also supports the development of car networking technology.The paper can serve as a reference for future research on the driving strategy of driverless cars in the environment of car networking.