A method for guiding left-turn vehicles at intelligent vehicle-road coordinated uncontrolled intersections

Abstract

The invention provides a method for guiding the passage of left-turn vehicles at an intelligent vehicle-road coordination uncontrolled intersection, and relates to the technical field of vehicle-road coordination and safety control in an intelligent transportation system. The method first collects the position and speed information of the own vehicle, detects the number of vehicles and slow-moving traffic information in each lane in the intersection communication area in real time, and determines the conflict area; then counts the right of way of the conflicting traffic flow with the left-turn vehicle; Information exchanged between roadside units, vehicle-mounted units and vehicle-mounted units, calculating the gap time that can be traversed by left-turning vehicles and motor vehicles, the acceleration of left-turning vehicles; the acceleration of left-turning vehicles and non-motor vehicles, and the speed of left-turning vehicles and pedestrians Passing acceleration; finally calculate the safe speed of the left-turning vehicle following the vehicle. This method can effectively solve or alleviate the traffic safety problem of left-turn vehicles passing through uncontrolled intersections, so that vehicles can pass through the intersection without stopping as much as possible, thereby improving traffic efficiency and comfort.

Description

technical field [0001] The invention relates to the technical field of vehicle-road coordination and safety control in an intelligent transportation system, in particular to a method for guiding left-turn vehicles at an uncontrolled intersection of intelligent vehicle-road coordination. Background technique [0002] Uncontrolled intersections do not have any control measures, and vehicles have no rules to follow when driving at uncontrolled intersections, especially in uncontrolled intersections with poor visibility, where accidents are more serious. The problem of traffic accidents caused by left-turn vehicles is even more aggravated. In the past, the research on the safety problems caused by left-turn vehicles at intersections mainly focused on traffic influencing factors such as people, vehicles, roads, and traffic environment and their relationship with traffic accidents. Based on the analysis, improve road design, strengthen traffic control measures, etc., or install ac...

AI Technical Summary

Problems solved by technology

[0002] There are no control measures at uncontrolled intersections, and vehicles have no rules to follow when driving at uncontrolled intersections, especially accidents at uncontrolled intersections with poor sightlines are more serious

The problem of traffic accidents caused by left-turning vehicles is even more serious. In the past, the research on the safety problems caused by left-turning vehicles at intersections mainly focused on traffic influencing factors such as people, vehicles, roads, and traffic environment, and their relationship with traffic accidents. Based on this analysis, improve road design, strengthen traffic control measures, etc., or install active and passive safety devices on vehicles to improve road safety, but traditional design, control and management technologies can only reduce traffic to a certain extent. The number of conflicts in the flow or the severity of conflicts cannot be effectively prevented from happening, and the safety benefits of intersections cannot be optimal, and it is even more difficult to solve traffic problems in essence, and it is impossible to improve the safety level of uncontrolled intersections.

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