Traffic light control method, device and system

Abstract

The invention discloses a traffic light control method, device and system. The method comprises the following steps: a traffic light control device calculating expected driving efficiency of an intersection in each preset driving direction according to basic parameters and video information of the intersection; controlling traffic light state of the intersection according to the expected driving efficiency and the preset driving direction information, wherein the preset driving direction, where the expected driving efficiency is high, is a green light; calculating passing efficiency according the total number and release time of vehicles in the preset driving direction corresponding to the green light; and when the passing efficiency is smaller than the expected driving efficiency corresponding to any other preset driving direction, adjusting the traffic light state according to the expected driving efficiency and the preset driving direction information, wherein in the adjusted traffic light state, the efficiency in the preset driving direction corresponding to the green light is higher than the passing efficiency. According to the scheme above, the passing efficiency of the intersection can be maximized.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a traffic light control method, device and system. Background technique [0002] At present, the running time of traffic lights in each direction at each intersection of urban roads usually adopts a timing switching control mode, and the running time of traffic lights in each direction at each intersection is fixed. This control method using timing switching usually causes vehicles or pedestrians to "wait for nothing" to switch green lights. [0003] Although some intersections set different timing switching times for traffic lights according to the proportion of traffic volume to alleviate the phenomenon of vehicles or pedestrians "waiting" for green light switching to a certain extent, the traffic volume at each intersection changes in real time. The timing switching control method does not take into account the real-time changes in the traffic flow at the intersection. I...

AI Technical Summary

Problems solved by technology

This control method using timing switching usually causes vehicles or pedestrians to "wait" for the green light to switch.

[0003] Although some intersections set different timing switching times for traffic lights according to the proportion of traffic volume to alleviate the phenomenon of vehicles or pedestrians "waiting" for green light switching to a certain extent, the traffic volume at each intersection changes in real time. The timing switching control method does not take into account the real-time changes in the traffic flow at the intersection. In some time periods, the traffic flow on the green light lane may be small, while the red light lane has a large traffic flow, which cannot fully utilize the road. traffic capacity, which leads to waste of road traffic resources and reduces road traffic efficiency

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