Study On Vehicles Changing Routes Under The Condition Of Vehicle Networking

Vehicle lane change is one of the common driving behaviors on high speed roads.Lane-changing process involves vertical and horizontal change of the vehicle.It is also affected by the location and motion state of the surrounding vehicles,and is characterized by complexity,time varying,and randomness.The development of vehicle networking technology provides a new idea for vehicles implementing safety lane change.Under the condition of vehicle networking,lane changing vehicles can obtain traffic information such as location,speed,and acceleration of surrounding vehicles in real time,laying the foundation for dynamic planning of vehicle lane change trajectories.Through the tracking control of the dynamic trajectory,the vehicle can complete the lane-changing driving and ensure the safety of the lane changing process under the condition of changing state of the surrounding vehicles.In this paper,the discretionary lane changing behavior of vehicles under high-speed dynamic environment is studied.The polynomial is used to describe the lane changing trajectory of the vehicle.Based on the minimum lane-change safety distance model,the influence of the surrounding vehicle environment on the lane change safety is analyzed.According to the NGSIM trajectory data based on high-speed road image acquisition,trajectory filtering and data extraction are used to collect trajectory characteristics of vehicle lane change in a real road traffic environment.The related physical quantities in vehicle lane change trajectories are analyzed and counted.The condition for determining the safety of lane change is that the minimum longitudinal distance of adjacent vehicles does not exceed the minimum acceptable gap.This paper builds a software simulation platform based on Matlab and a physical simulation platform based on intelligent vehicles to simulate the vehicle lane changing behavior under the condition of vehicle networking.Method for dynamic trajectory planning is proposed based on the position and operating status of adjacent vehicles.The dynamic trajectory is tracked and controlled by different control algorithms.Select the conditions that will affect the safety of the lane change to detect the response of the vehicle to changes in the movement of the surrounding vehicles during the lane change process.From the simulation results,it can effectively improve the safety of vehicles in the lane change process that the vehicle dynamically adjusts the lane change path according to the movement status of the surrounding vehicles under the condition of vehicle networking.