Vehicle guidance system and guidance method for uncontrolled intersections based on vehicle-road coordination

Abstract

Disclosed are an uncontrolled intersection vehicle passing guiding system based on vehicle-road cooperation and a guiding method therefor. The guiding system comprises at least one vehicle-mounted device (1), a roadside device (2) and a monitoring centre (3); information is transmitted between the vehicle-mounted device (1) and the roadside device (2), between vehicle-mounted devices (1) and between the roadside device (2) and the monitoring centre (3) via a wireless communication network; each of the vehicle-mounted devices (1) comprises a vehicle main control module (11), a vehicle basic information storage module (12), a GPS positioning module (13), a vehicle speed collection module (14), a driving intention collection module (15), an OBD interface module (16), a vehicle speed control module (18) and a prompt module (17); and the roadside device (2) comprises a roadside main control module (21), an intersection basic information storage module (22), a vehicle passing sequence decision-making module (23) and a wireless communication module (24). By means of the uncontrolled intersection vehicle passing guiding system based on vehicle-road cooperation and the guiding method therefor, vehicle collisions at an uncontrolled intersection can be effectively avoided, the passing efficiency at the intersection is improved and the integration of traffic management and control is truly realized.

Description

technical field [0001] The invention relates to a vehicle-road coordination and safety control technology in an intelligent transportation system, in particular to a vehicle-road coordination-based uncontrolled intersection vehicle passage guidance system and a guidance method thereof. Background technique [0002] Traffic accidents that occur at road intersections every year are not uncommon. Because there are no control measures at unsignalized intersections, vehicles cannot follow the rules when driving at uncontrolled intersections, or at signalized intersections where the signal control system fails, especially in sight Accidents are more serious at bad unsignalized intersections. The traffic problem at road intersections is a common problem faced by countries all over the world. It has been puzzling many scholars and researchers. In the past, the research on intersection safety problems mainly focused on traffic influencing factors such as people, vehicles, roads, and ...

AI Technical Summary

Problems solved by technology

[0003] By retrieving the existing patents, we can know that the existing patents are mainly aimed at the early warning of uncontrolled intersection vehicles. Safety Issues at Intersections

For example, Chinese patent application No. 201210163698.X discloses an auxiliary control method to solve the problem of poor sight distance at unsignalized control intersections. It calculates the time for vehicles in each direction to reach the conflict point, and judges that the distance from the corresponding stop line is 50m according to the calculation results. Whether the yellow light at the location needs to be turned on. It is recommended that the vehicle slow down when the yellow light is on. This method needs to bury the magnetic induction coil underground and install the yellow light. The installation is complicated, and this method only reduces the probability of accidents to a certain extent, but does not Given the safe speed of vehicles passing through the intersection, the avoidance of vehicle collisions is not really realized; Chinese Patent Application No. 201110311331.8 discloses a method for resolving traffic conflicts between two vehicles at unsignalized intersections. According to the current state of the vehicle, the trajectory of the vehicle is roughly determined, and whether the vehicle will collide is determined according to the predicted trajectory, and the acceleration required for vehicle collision avoidance is given. This method can only predict the vehicle in a short period of time based on the current state. If the time is too long, the prediction result may be invalid, resulting in too large judgment error, and the conflict resolution strategy will also be invalid. Moreover, this method does not clearly provide the identification method of the vehicle's driving intention, and it only solves the conflict between the two vehicles. How to resolve conflicts when vehicles from all four directions at an uncontrolled intersection converge into the conflict area of ​​the intersection?

[0004] Most of the currently disclosed devices for assisting vehicle driving safety at road intersections are early warning devices, and the device functions are single. The coordination problem among them, let alone avoiding the occurrence of traffic accidents fundamentally, it is difficult to realize driving safety in the true sense

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