Traffic state assessment method and system based on road network topology structure

Abstract

The invention discloses a traffic state assessment method and system based on a road network topology structure, and belongs to the technical field of traffic state assessment. The method solves the problem that traffic flow data of a certain road section in a period of time cannot be obtained and thus a traffic state of the road section cannot be assessed. When a flow value of a road section currently cannot be obtained, the traffic state assessment method based on the road network topology structure includes the following steps: determining weight coefficients between the target road sectionand an upstream road section or weight coefficients between the target road section and a downstream road section according to a flow value of the upstream road section or a flow value of the downstream road section; determining a current flow value of the target road section according to the weight coefficients between the target road section and the upstream road section or the weight coefficients between the target road section and the downstream road section and the current flow value of the upstream road section or the downstream road section of the target road section; and determining atraffic congestion state of the road section according to the current flow value of the target road section. Traffic state assessment on the road section of which the flow value is currently cannot be obtained is realized.

Description

technical field [0001] The invention relates to the technical field of traffic state evaluation, in particular to a traffic state evaluation method based on road network topology. Background technique [0002] In recent years, with the rapid development of urban road network intelligent control and management technology, traffic status assessment has become an important means of traffic management in many large and medium-sized cities, but due to the construction and renovation of urban roads and urban infrastructure, it will lead to real In the case of a road traffic detector failure, the traffic flow data of a certain road section is missing for a period of time and thus cannot be obtained (meaning that it cannot be directly obtained). A technical solution is urgently needed to determine this unobtainable traffic flow data to evaluate the current The traffic status of the road section where the flow value cannot be obtained makes the assessment of the traffic status of the...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of urban road network intelligent control and management technology, traffic status assessment has become an important means of traffic management in many large and medium-sized cities, but due to the construction and renovation of urban roads and urban infrastructure, it will lead to real In the case of a road traffic detector failure, the traffic flow data of a certain road section is missing for a period of time and thus cannot be obtained (meaning that it cannot be directly obtained). A technical solution is urgently needed to determine this unobtainable traffic flow data to evaluate the current The traffic status of the road section where the flow value cannot be obtained makes the assessment of the traffic status of the entire road network accurate and comprehensive, thereby improving the comprehensiveness and universality of urban road network management and control

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