Research On V2I Collision Avoidance Strategy Based On The Accident Scenario Of Cars And Two-wheelers At The Crossroads

The number of collisions between cars and two-wheelers at the crossroads remains high,and the safety situation is severe.Among them,two-wheeler cyclists,as vulnerable road participants,are prone to serious injuries or even death in collisions.Due to the complex movement tracks of traffic participants and the diverse driving postures of two-wheelers at the crossroads,the traffic conflicts between the car and the two-wheeler at the crossroads cannot be detected timely only by sensors equipped with self-propelled vehicles,and It is difficult to ensure the driving safety of cars and two-wheelers at the crossroads.V2I technology can realize the communication between vehicles and road infrastructure,identify potential collision risks in time,and effectively reduce the occurrence of collision accidents at the crossroads.Therefore,the crossroad collision avoidance strategy based on V2 I technology has great potential in ensuring traffic safety.Accident data is an important basis for the study of traffic test scenarios.In China,there is a lack of research on the collision test scenarios of cars and two-wheelers at the crossroads.In addition,only through the road traffic scenario test system can it better adapt to the complex and diversified traffic conditions.Therefore,it is necessary to analyze road traffic accident data in China,obtain accident scenarios of cars and two-wheelers at the crossroads,build test scenarios of cars and two-wheelers at the crossroads,and provide reference for research on collision avoidance strategies of cars and two-wheelers at the crossroads.The research contents of this paper are as follows:(1)Comparing the differences in time,space,environment and participant information between the NAIS data and the national road traffic accident statistical annual report data,it is analyzed that the NAIS data are representative of traffic accident conditions in China;(2)Select accident data of cars and two-wheelers at the crossroads from NAIS data.Based on cluster analysis and statistical analysis,5 types of accident scenarios for cars and two-wheelers at the crossroads are obtained;(3)Parameterize the accident scenarios of cars and two-wheelers at the crossroads,use the Pre Scan software platform to build test scenario models,and provide scenario support for the study of collision avoidance strategies at intersections;(4)Research on collision avoidance strategies based on V2 I technology,through the discretization of intersections,participant trajectory prediction,collision collision detection,etc.to provide early warning for participants,and build a vehicle model incorporating collision avoidance algorithms;(5)Combined with Pre Scan and Simulink simulation,the collision avoidance effect is evaluated based on the fuzzy evaluation method.Through simulation experiments,the influence of parameters such as braking deceleration,conflict severity threshold and braking response time in collision avoidance strategy on the effect of collision avoidance is explored.Research on the application and transformation of accident data of cars and two-wheelers at crossroads in the NAIS database build test scenarios and explore the performance of collision avoidance strategies based on V2 I technology.It provides a theoretical reference for the development of test scenarios suitable for cars and two-wheelers at crossroads in my country and the study of collision avoidance strategies at intersections,and a technical solution for improving the traffic safety of cars and two-wheelers at crossroads in my country.