Method and device for analyzing causes of heterogeneous traffic accidents
A technology of traffic accidents and analysis methods, which is applied in traffic flow detection, traffic control systems, traffic control systems of road vehicles, etc. It can solve the problems of inability to analyze factors affecting accidents and infer causes, and inability to guide the formulation of road traffic safety improvement strategies, etc. problem, to achieve high-accuracy results
Active Publication Date: 2022-04-05
TONGJI UNIV
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Problems solved by technology
Road traffic accidents have the problem of heterogeneity of influencing factors; in the research of traffic safety analysis and prediction, if the heterogeneity of accidents cannot be dealt with, it will not be possible to conduct accurate analysis of influencing factors and inference of causes of accidents, and it will not be possible to guide the formulation of Targeted and efficient road traffic safety improvement strategies
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[0042] This embodiment proposes a method for analyzing the causes of heterogeneous traffic accidents based on the path analysis model. Based on microscopic traffic flow data, the causes of heterogeneous accidents are studied, and the direct and indirect relationship between accident influencing factors and accidents is analyzed. The implementation of targeted traffic safety improvement measures and active traffic management provide theoretical support.
[0043] A method for analyzing the causes of heterogeneous traffic accidents, the method comprising the following steps:
[0044] Step S1: Obtain accident-related data and extract potential influencing factors of traffic accidents;
[0045] Step S2: Based on the potential influencing factors of traffic accidents, the key influencing factors of traffic accidents are screened by random forest method;
[0046] Step S3: Based on the key influencing factors of the traffic accident, multiple subsets of the influencing factors are ob...
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The present invention relates to a method and equipment for analyzing the causes of heterogeneous traffic accidents. The method includes the following steps: Step S1: Acquire accident-related data, and extract potential influencing factors of traffic accidents; Step S2: Based on the potential influencing factors of traffic accidents, through random forest The method screens the key influencing factors of traffic accidents; step S3: based on the key influencing factors of traffic accidents, obtain multiple subsets of homogeneous influencing factors through latent class analysis method; step S4: based on multiple subsets of homogeneous influencing factors, through path analysis method Obtain the causes of heterogeneous traffic accidents. Compared with the existing technology, it can better deal with the contradictory relationship between heterogeneity and homogeneity of accident causes, and help understand the diversification of accident causes.
Description
technical field [0001] The invention relates to the fields of traffic safety analysis and active traffic management, in particular to a method and equipment for analyzing causes of heterogeneous traffic accidents. Background technique [0002] The road traffic safety situation is still grim. According to the 2018 Global Status Report on Road Safety, approximately 1.35 million people die in road traffic worldwide each year, and another 20 to 50 million people are injured or disabled in collisions caused by road traffic accidents. The data in the "Road Transportation Safety Development Report 2017" shows that in 2016, my country received a total of 8.643 million road traffic accidents, an increase of 659,000 or 16.5% year-on-year. Therefore, there is an urgent need to improve road traffic safety. [0003] The traffic data available is increasingly diverse. With the development of holographic transportation, various data detection technologies are becoming more and more matu...
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IPC IPC(8): G08G1/01G06K9/62
CPCG08G1/01G08G1/0104G06F18/24323G06F18/24
Inventor 余荣杰郑银高珍
Owner TONGJI UNIV