Research On Formation Mechanism Of Platoon And Influence Of Mixed Traffic Based On Simulation

Intelligent network vehicle is one of the important research contents of intelligent transportation system,and automatic driving vehicle is the future development direction of intelligent network vehicle.In the future of the development of data communication technology and high intelligence of vehicles,the driving behavior rules of autonomous vehicles on the road will be the key research content.In the process of gradually popularizing the automatic driving from vehicles,the interaction between the automatic driving vehicles and the manual driving vehicles also needs further research.This paper first analyzes and studies the existing following model,and uses the improved model of intelligent driver model as the following model of the automatic driving vehicle.Then,according to the three rules of approaching,consistent speed and avoiding collision,a new longitudinal control strategy is proposed.The lateral control strategy is proposed based on the lane change behavior rules.The automatic driving vehicles within a certain range are formed into rows in a short time by the transverse and longitudinal control strategy to form the vehicle team to drive.Then,the proportion of the vehicles mixed with the manual driving is changed,and the influence of the driving style and the lane changing motivation on the vehicles is studied.Finally,the paper uses the VISSIM to program the external driving documents with C++ language,and then makes a simulation study on the driving behavior of the autonomous driving vehicles.The results show that the proposed fleet control strategy can make the automatic driving vehicles form a fleet in a short time,which is significantly improved compared with the manual driving vehicles and the delay is significantly reduced.When in mixed operation,the proportion of automatic driving vehicles exceeds 60%,the operation state is relatively stable,and the parking queuing phenomenon is relatively small,the delay is low and the expected speed is close to the expected speed;when the mixed proportion is40% or less,the operation state is unstable,and the parking queuing phenomenon is serious,the delay is higher,the driving speed is lower,even lower than the condition that all the vehicles are manually driven on the road What’s the matter.