Intelligent control method of traffic light of urban main road

Abstract

The invention discloses an intelligent control method of a traffic light of an urban main road. The method comprises: according to an intersection serial number carried by a linked control request from a congestion intersection, a main road intersection state table is queried to obtain a first main road identifier and a second main road identifier of the current intersection and an upstream adjacent intersection and a downstream adjacent intersection of each main road of the current intersection; with an inflow vehicle traffic detection and an outflow vehicle traffic detector that are arranged at each main road section at the main road direction, the numbers of vehicles that are going to pass through the current intersection and upstream and downstream adjacent intersections of the main road and vehicle traffic capacities per unit time of the current intersection and upstream and downstream adjacent intersections are obtained; according to the number of all vehicles that are going to pass through the intersection and the vehicle traffic capacities per unit time, needed vehicle passing time of the current intersection and the upstream and downstream adjacent intersections at the main road is determined; and on the basis of needed vehicle passing time, green light linked control time of the current intersection and the upstream and downstream adjacent intersections at the main road is determined to carry out linked control. According to the invention, vehicles on the main road can be guided rapidly and the worsening traffic congestion can be prevented.

Description

technical field [0001] The invention relates to the field of intelligent traffic signal control in smart cities, in particular to a method capable of intelligently controlling traffic signal lights at the traffic intersection according to the traffic conditions at the intersection. Background technique [0002] Since the 1980s, China's urbanization process has continued to advance. In large cities such as Beijing, Shanghai, Guangzhou, Shenzhen, and even some small and medium-sized cities, 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 lights must be set at each road intersection to control the passing vehicles. 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] Usually, the control of t...

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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