Design And Implementation Of Cross Road Driving Guidance System In Second Class Road Without Traffic Light

With the development of intelligent transportation technology,it is the current research hotspot to solve the traffic coordination problem of traffic lights without intersecting lights.In this context,this paper aims at the research on the traffic coordination technology under the cooperative road of the no-signal intersection of the secondary highway,and proposes and develops a driving guidance system based on vehicle road coordination.The main work of this paper is as follows:This paper studies and develops the driving guidance system of crossroads without traffic lights.The system is divided into vehicle sub-system and roadside sub-system.The driving guidance system set the application scenario is the secondary road intersection vehicles from the branch into the trunk road.The roadside terminal system is mainly composed of WAVE-based vehicle-road communication equipment,which can continuously broadcast the road priority information,real-time traffic information and road network information,and can accept the update information from the vehicle side,and design the digital signature process to verify the update Information data security.The vehicle terminal system is mainly composed of WAVE-based vehicle-car communication equipment and vehicle intelligent terminal.It can realize the accurate geographical position,speed and direction of the nearby vehicle through the vehicle-car communication equipment.According to the driving direction of the vehicle,And obtain road priority information,real-time traffic information and road network information from the roadside subsystem.Then the vehicle sub-system will be based on the distance between the vehicle and the intersection of the road sort,according to the speed of their own vehicles to calculate the time the vehicle arrived at the junction,and then take the relevant lane in the vehicle distance and speed to calculate and determine whether There may be a collision.And finally interacts with the driver through the intelligent terminal application of the vehicle subsystem.In this paper,the reliability test and precision test are carried out according to the vehicle side,the road side end and the analog data input.The paper introduces the crossed lane modeland the import lane model to test the minimum distance,the maximum waiting time and the average Waiting for these indicators,and the test results were analyzed.The results show that in the case of two-way traffic flow up to 4362 per hour,crossing the lane waiting time of not more than 49 seconds,the import lane wait time of not more than 61 seconds.After the two road branches and trunk road intersection three movements(turn left,straight and turn right)were tested,set the test case and completed the test.