Dynamic control method of traffic signal lamps

Abstract

The invention discloses a dynamic control method of traffic signal lamps at a road traffic intersection. The dynamic control method comprises the steps of: acquiring a congestion index of each road at the road traffic intersection; regarding an average value of all congestion indexes greater than a first threshold value as a first congestion index of the road traffic intersection when the congestion indexes greater than the first threshold value exist; querying a road intersection state table to obtain a road sign of each road connected with the road traffic intersection; determining first and second main roads based on the obtained road signs; with regard to each of the first and second main roads, determining adjacent upstream and downstream intersections of a congested road traffic intersection on the main roads, and acquiring a second congestion index of the adjacent upstream intersection and a third congestion index of the adjacent downstream intersection; and controlling green light passing time of the congested road traffic intersection and the upstream and downstream intersections in the corresponding main road directions according to the obtained first, second and third congestion index as well as the road intersection state table. The dynamic control method can disperse vehicles in the direction with maximum traffic pressure most quickly, and effectively alleviate the traffic pressure.

Description

technical field [0001] The invention relates to the field of traffic signal control, in particular to a method for a signal light 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 intersect...

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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