Traffic signal phase design method based on integer programming model

Abstract

The invention discloses a traffic signal phase design method based on an integer programming model, comprising the following steps: S1, calculating a candidate phase matrix: establishing a lamp group compatibility relation graph Gh, handling the confluence conflict of more than two traffic flows, removing each phase column in which the lamp group sets are compatible in pairs but not mutually compatible in the confluence conflict, and calculating a candidate phase set; S2, after the lamp group compatibility relation graph Gh is determined, inputting a target phase number, and ensuring that each lamp group appears at each once in one cycle of phase CP, wherein the cycle of phase CP is a cycle of phase composed of a plurality of phases selected from the candidate phase matrix; and S3, building a phase design model of vane volume, time headway and street-crossing passenger length taking the factors of conflict into account. Human judgment and adjustment in phase design are simplified. A phase design suitable for an intersection is picked out from multiple phase combinations automatically using a model. Manpower is reduced. The technical requirement on managers is lowered.

Description

technical field [0001] The invention relates to the field of road signal control in intelligent traffic, more specifically, to a traffic signal phase design method based on an integer programming model. Background technique [0002] Traffic signal control is to distribute the traffic flow of the network from the time and space, the purpose is to distribute the traffic flow to the network evenly, so as to ensure the safety, smoothness and order of the traffic. Signal phase is an important part of traffic signal control. The design of signal phase is to properly separate the traffic flows that conflict with each other or seriously interfere with each other, and reduce the interference of traffic conflicts at intersections. [0003] The phase design in the existing traffic signal control is to collect the basic data of the intersection, including the number of lanes, channelization division, traffic flow and other data, and carry out phase design through human judgment. The jud...

AI Technical Summary

Problems solved by technology

There will be a variety of phase combinations in the phase design. The phase design of the appropriate intersection is selected from a variety of phase combinations through repeated manual adjustments, all based on the experience of the manager. Therefore, the phase design of the traditional intersection is Science and rationality cannot be effectively guaranteed

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