Control method of traffic signal lights at road traffic intersections

Abstract

Disclosed is a method for controlling traffic lights at road traffic intersections, comprising: obtaining the congestion index of each road at the road traffic intersection, and storing it in a road state table at the intersection; Congestion, the average value of all congestion indexes greater than the first threshold is used as the first congestion index of road traffic intersections; the road with the largest congestion index is used as an alternative arterial road at a congested intersection, and the state table of the intersection road is queried to obtain the number of alternative arterial roads Match arterial roads, use alternative arterial roads and matching arterial roads as arterial roads; determine the adjacent upstream and downstream intersections of congested road traffic intersections on the arterial road, and obtain the second and third congestion indexes of adjacent upstream and downstream intersections; according to The obtained first to third congestion indexes and road state tables control the green light passing time of congested road traffic intersections and upstream and downstream intersections. The invention can quickly guide the vehicles in the direction with the greatest traffic pressure and effectively relieve the traffic pressure.

Description

technical field [0001] The invention relates to the field of traffic signal control, in particular to a signal light control method capable of dynamically adjusting the passing time of a green light according to the traffic conditions at road crossings. Background technique [0002] With the continuous advancement of the urbanization process, the number of motor vehicles has increased rapidly, and urban road congestion has become increasingly serious. In order to ensure the normal operation of vehicles between urban roads, traffic signal control at road intersections is particularly important. The traffic signal control at the intersection is mainly realized by the traffic signal controller. Therefore, traffic signal controllers play an increasingly important role in daily life. [0003] In the prior art, the control of the traffic lights at the intersection is usually controlled according to the preset time, and once the green passing time of each direction of the interse...

AI Technical Summary

Problems solved by technology

In other words, the control of the signal lights at a certain road intersection, such as the green light passing time, is a fixed time value, or only considers the traffic conditions at this road intersection for control, and does not consider the road traffic at the intersection adjacent to the road intersection situation

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