A kind of optimal control method for intelligent signal lights in expressway multi-line intersection area

Abstract

The invention discloses an intelligent signal lamp optimal control method for avoiding an express way multi-line intersection traffic jam. Real-time traffic flow data is automatically obtained througha video detector arranged at the downstream of a multi-line intersection region, and whether the traffic flow operating state of the downstream road section of the current intersection region is oversaturated or not is judged according to the traffic flow data; the real-time vehicle arrival rate and vehicle queue length of each entrance lane of the intersection region are obtained through video detectors at the intersection region and the upstream position, a signal control scheme of each entrance lane is regulated according to the vehicle queue length, and the vehicle passing rates of the entrance lanes are controlled coordinately. On the basis of the real-time traffic information, signal control of each entrance lane of the multi-line intersection is optimized, the phenomenon that the intersection region passing capability is lowered can be more effectively prevented, the traffic jam is avoided, multi-line intersection passing efficiency is maximized, the control method is easy to implement, and the method has the wide application range and the good application prospect.

Description

technical field [0001] The invention belongs to the technical field of traffic control and intelligent traffic, and in particular relates to an optimal control method for intelligent signal lamps aimed at avoiding traffic congestion in multi-line intersection areas of expressways. Background technique [0002] With the rapid economic growth of our country, expressways have experienced rapid development by leaps and bounds, and the mileage of expressways within cities and between cities has increased rapidly. In recent years, with the rapid increase in the construction mileage of expressways in my country and the rapid increase in the number of motor vehicles, the traffic demand and traffic flow of expressways have increased sharply, which has increased the traffic pressure of expressways, and the traffic capacity of some sections of the expressway network has been unable to meet The existing demand, the contradiction between traffic demand and traffic supply is becoming more ...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an intelligent signal light optimization control method aimed at avoiding traffic jams in multi-line intersections of expressways. The optimization of signal control can more effectively prevent the phenomenon of traffic capacity decline in the intersection area, avoid traffic congestion, and maximize the efficiency of multi-line intersection traffic

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