Research On Signalless Intersection Collaborative Control Strategy For Intelligent Networked Vehicles

At present,"smart vehicles" and "intelligent roads" are gradually becoming the new research direction in the field of intelligent transportation.With a large number of vehicles and roadside traffic infrastructure accessing the network to achieve interconnection,the traditional intersection without signal control and signal control mode will no longer be applicable to the future traffic road network.With the development of intelligent networked vehicles and connected vehicle technology,how to realize intelligent control of intersections is one of the key points in the research of vehicle-road cooperative control.In order to realize the guidance of the driving speed of intelligent networked vehicles around the intersection and realize the safe,efficient and smooth passage of vehicles through the signal-free intersection,this paper designs the signal-free intersection cooperative control strategy to guide the vehicles to drive at the optimal speed under the premise of ensuring the safety of vehicle driving.The main research content of this paper is divided into the following parts.(1)Establishing a no-signal intersection traffic rule base.The "422" type intersection is selected as the research object,the intersection vehicle conflict type is analyzed,the vehicle conflict detection process is designed,and the vehicle driving priority rule base is established based on traffic safety laws and regulations.(2)Propose signal-free intersection cooperative control strategy.Under the premise of vehicle driving safety,the two-vehicle cooperative control strategy is proposed to induce the speed of vehicles with different conflict types respectively,and on this basis,the multi-vehicle cooperative control strategy model applicable to medium and high traffic road network flow is proposed,and the whale algorithm is applied to solve the model to get the best driving speed of vehicles and ensure the efficient and smooth driving of vehicles.(3)Build a joint simulation platform of MATLAB and VISSIM.The MATLAB programming platform is used for the secondary development of VISSIM simulation software,and actual intersections with different conditions are used as simulation objects to verify the feasibility of the cooperative control policy of signal-free intersections proposed in this paper.The simulation results show that compared with the traditional intersection environment,the total vehicle travel time of the intersection under the two-vehicle cooperative control environment proposed in this paper is reduced by 7.9%,the average vehicle delay is reduced by 72.7%,the average number of stops is reduced by 76.2%,and the average speed is increased by 8.8%;the total vehicle travel time of the intersection under the multi-vehicle cooperative control environment is reduced by 77.2%,the average vehicle delay is reduced by 97.5%,the average number of stops decreased by 86%,and the average speed increased by 87%.