Self-adaptive lane-borrowing left-turning system and method based on video detection

Abstract

The invention discloses a self-adaptive lane-borrowing left-turning system and method based on video detection. A lane-borrowing left-turn port is formed in the boundary between an exit lane and an entrance lane left-turn lane, the exit lane of an adjacent lane-borrowing left-turn port is a lane-borrowing left-turn lane, and the lane-borrowing left-turn port is used for allowing vehicles to driveinto the lane-borrowing left-turn lane from the entrance lane left-turn lane in a forward direction. A video vehicle detector detects the number of queuing vehicles in the left-turn lane detection area, and a lane-borrowing left-turn traffic signal controller performs logic judgment according to the number of queuing vehicles to generate a lane-borrowing left-turn signal lamp state control signal;the lane-borrowing left-turn signal lamp displays different signal lamp states according to the lane-borrowing left-turn signal lamp state control signal and indicates the passing state of the lane-borrowing left-turn opening. The left-turn lane is arranged by means of the exit lane space, the signal control mode is reasonably set, the time and space relation of the intersection is ingeniously utilized, the traffic capacity of left-turn vehicles is improved, and the high traffic efficiency of the intersection is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and relates to a video detection-based self-adaptive left-turn system and method. Background technique [0002] The large traffic flow in one-way lanes at intersections has always been a difficult problem in traffic control and management. In the face of the increasingly normalized traffic congestion, traffic management departments in their daily work, in order to ensure the smooth flow of the main road, the green signal ratio of the left-turn phase will be relatively high. Small, turning left and waiting in line at the red light will take longer. There are generally two ways to solve the large left-turn traffic flow in one direction: one is to alleviate the congestion of left-turn lanes at intersections by increasing the number of lanes; the other is to increase the left-turn release time to meet left-turn demand. [0003] At present, signal control is mainly through adding l...

AI Technical Summary

Problems solved by technology

[0003] At present, signal control is mainly through adding left-turning phases and increasing the time of left-turning phases. Too much increase in left-turning phases will lead to empty discharge phenomenon or too long cycle, resulting in too long waiting time for red lights in other phases, causing violations of laws and regulations. resulting in frequent traffic accidents

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