Arterial Coordinated Control Model and Its Optimization Method for Adjacent Intersections

Abstract

Provided are an adjacent intersection arterial road coordinate control model and an optimization method thereof. The method includes the steps of building an adjacent intersection four-phase arterial road coordinate control model; performing individual coding, initializing data and setting parameters; performing population initialization; calculating values of the fitness of individuals in a population; performing minimum spanning tree clustering on the population; selecting individuals in the population to participate in genetic manipulation; performing genetic manipulation and mutation on the selected individuals; repeating iteration until obtaining the best individual. According to the adjacent intersection arterial road coordinate control model and the optimization method of there adjacent intersection arterial road coordinate control model, the minimum total delay of each vehicle team waiting in line is set as performance indicators, a more complete adjacent intersection arterial road coordinate control model is built by analyzing the signal states that front vehicles and rear vehicles of a vehicle team released in different phases at the upstream intersection encounter before reaching the downstream intersection and whether all vehicles at the intersection are released during release or not, an improved genetic algorithm is used as an optimization algorithm, and the length of the cycle, the arterial road timing, the signal timing and the phase difference are used as parameters for optimization solution.

Description

technical field [0001] The invention belongs to the technical field of signal timing optimization at adjacent intersections in urban traffic control, and in particular relates to an arterial coordinated control model of adjacent intersections and an optimization method thereof. Background technique [0002] At present, the city is developing and growing at a very fast speed, and the problem brought about at the same time is that the urban traffic congestion is becoming more and more serious. Therefore, reasonable coordinated control of arterial intersections can effectively alleviate urban traffic congestion. The traditional signal control methods for arterial intersections include: numerical solution method and graphic method, which aim at obtaining the maximum green wave width to obtain the time difference of the coordinated control system to control the system. Among them, the numerical solution method is more commonly used, but in the calculation process of the numerica...

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Problems solved by technology

Liu Guangping and others proposed a calculation method for intersection delay under unsaturated, saturated and oversaturated conditions, but only proposed a method for calculating delay with a single intersection as the research target, and did not propose a perfect traffic control model

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