Method for dynamically dividing traffic control region

Abstract

The invention relates to the field of traffic control, in particular to a method for dynamically dividing a traffic control region. The method comprises the following steps that rough division indexes of road segments between all adjacent intersections are calculated, primary division is carried out according to the rough division indexes, and the rough division indexes are determined according to distance, flow and cycle principles; descending sort is carried out on remaining road segments in the primary division according to the rough division indexes, traversal is started, the bandwidth reaching rate of green wave bands is used as division indexes, and fine division is carried out on sub-regions again; the sub-regions are dynamically regulated according to whether the bandwidth reaching rate of the green wave bands meets regulation conditions or not. The method has the advantages that the method of carrying out division two times is provided, a maximum green wave band optimization model is built based on the method, the sub-regions are divided more reasonably, the coordination control effect in the sub-regions is more effective, the bandwidth reaching rate of the green wave bands is used as the regulation conditions of controlling the sub-regions, the dynamic regulation between the sub-regions is further achieved, and traffic circulation efficiency is improved.

Description

technical field [0001] The invention relates to the field of traffic control, in particular to a method for dynamically dividing traffic control areas. Background technique [0002] Effective division of traffic control sub-areas is the basis for efficient regional coordinated control. Its basic idea is to divide a complex and huge road network into several independent sub-areas according to certain principles and indicators, implement appropriate control and optimization strategies according to the characteristics of the sub-areas, and delegate the control rights step by step to make the system more efficient. Flexible and reliable. Therefore, finding the appropriate division index and its algorithm has become a research hotspot in the coordinated control of traffic areas. [0003] At present, foreign traffic control systems (such as SCOOT and SCATS systems, etc.) mainly use the method of statically dividing control sub-areas, while the method of dynamically dividing cont...

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Problems solved by technology

Domestic scholars have also carried out relevant research on the division of control sub-areas, and proposed automatic division methods of control sub-areas based on the "periodic principle", "flow principle" and "distance principle" respectively; given the periodic sub-area and phase difference / The concept of Lvxinbi sub-area and put forward the corresponding sub-area dynamic division method; proposed an idea based on static area control, by classifying urban traffic congestion and adopting different judgment standards to realize the idea of ​​dynamic zoning control; The concept of coordination degree has been proposed, and the sub-region division method based on the hypergraph partition algorithm has been established; the dynamic partition of the road network based on the spectral graph theory combined with the spectral clustering algorithm has been established; various influence sub-region divisions have been integrated On the basis of factors, a sub-area dynamic division model based on correlation degree analysis is established. Due to the lack of search efficiency and optimization ability of genetic algorithm, the control sub-area division algorithm cannot search for the optimal or sub-area faster and more accurately. Optimal Departition Scheme

[0004] However, the existing sub-area division indicators basically stay on the principles of cycle, distance, and flow, which cannot guarantee the rationality of sub-area division, and consider the effective coordination and control of signals in sub-areas and the real-time dynamic adjustment of sub-areas. Insufficient, that is, there are certain limitations and defects in the control sub-area division algorithm, resulting in the dynamic sub-area division can not achieve the desired effect

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