Dynamic division method of urban road network control sub-area based on macro basic graph

Abstract

The invention relates to a method for dividing an urban road network, in particular to a dynamic division method of an urban road network control sub-area based on a macroscopic basic map. The methodsolves a problem that the existing division method lacks theoretical support, is unscientific in the threshold of the index, is not systematic in division, is not comprehensive in target, and cannot achieve real-time adjustment. The method comprises 1) initializing a computer; 2) selecting an influencing factor and collecting the basic data; 3) calculating a relationship between adjacent road segments according to a road network topology structure and traffic information data, and establishing a weight matrix; 4) locally representing the similarity between the road segments and establishing asimilarity matrix; 5) initially dividing the road network; 6) updating the numbers and merging the small sub-areas. The method, based on the basic data of each road segment in the road network, fullyconsiders the mutual influence factors between adjacent road segments, and has sufficient theoretical basis support, can achieve real-time adjustment, and is clear in objective and reasonable in division.

Description

technical field [0001] The invention relates to a method for dividing an urban road network, in particular to a method for dynamically dividing urban road network control sub-areas based on a macro basic graph. Background technique [0002] With the rapid growth of motor vehicles and the increasing traffic density, traffic congestion has gradually become an important regional traffic problem from point to area. Some previous theories have well demonstrated that dividing sub-area boundary control can greatly alleviate large-scale traffic problems. As an important foundation of zoning control, it is increasingly important to dynamically analyze the impact of influencing factors on vehicle capacity and establish a method of dynamic division of urban road network control sub-areas that is both scientific and reasonable. [0003] The structure of the modern road network is extremely complex, and there are many intersections. It is unreasonable and inefficient to implement coordin...

AI Technical Summary

Problems solved by technology

However, the current dynamic division of urban road network control sub-area also retains some defects: 1. The dynamic division method of control sub-area is easy to deviate from the theoretical system of traffic control system. 2. The influence factors considered in the road network control sub-area division method lack theoretical support. These performance indicators only study the correlation between two adjacent road sections, and cannot fully involve multiple adjacent road sections. , and the threshold value of the division index determined at the same time is not sufficiently scientific; 3. The division of road network control sub-areas is not systematic, and the division objectives are not comprehensive, and it is difficult to adjust quickly with the real-time nature of traffic changes and congestion changes

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