Long trunk line intersection signal coordination control method based on segmented green waves

Abstract

The invention discloses a long trunk line intersection signal coordination control method based on segmented green waves. The long trunk line intersection signal coordination control method comprisesthe following steps of: inputting related information of a long trunk line intersection, and stipulating long trunk line signal control limiting data; introducing a state variable to describe whethereach intersection is a green wave segmentation point or not on the basis of a bidirectional green wave control model; adjusting bandwidth constraints and whole-loop constraints in the model accordingto a bandwidth relationship and a green wave band transfer relationship between intersections in the same sub-section and different sub-sections, identifying a connection relationship between adjacentintersections, and constructing a long trunk line subsection green wave coordination control optimization model by taking maximization of the sum of bandwidths of all intersections as a target; and solving the model, and outputting related control parameters to obtain a long trunk segment green wave control scheme. Starting from traffic flow properties, long trunk line intersections are flexiblycombined, the problem that feasible bandwidth is difficult to obtain through long trunk line two-way green wave control is solved, and the adaptability of a traditional green wave control method is improved.

Description

technical field [0001] The invention relates to the field of signal control in traffic management and control, in particular to a signal coordination control method for long arterial intersections based on segmented green waves. Background technique [0002] The green wave control of the arterial line is to set the control parameters such as phase difference and phase sequence of the arterial intersection reasonably, so that the convoy can realize continuous passage on the arterial line, which is one of the key traffic control methods to improve traffic efficiency and alleviate traffic congestion. In the green wave optimization model of the trunk line, the flow state of each intersection in the trunk line will have an impact on the control effect of the trunk line. Therefore, the more intersections the trunk line contains and the more constraints, the smaller the bandwidth, or even no feasible solution. . In this regard, it is not difficult to think that the long trunk line...

AI Technical Summary

Problems solved by technology

Based on the MAXBAND model, the theory and method of green-wave coordinated control of trunk lines are relatively mature, but there are few studies on segmental green-wave control of long trunk lines, and the research on segmental methods of long trunk lines is not comprehensive enough.

When the number of intersections requiring green wave control is large, the bandwidth of green wave is often small due to the constraints of traffic conditions at each intersection, making it difficult to achieve ideal control effects

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