Traffic unit safety evaluation method based on incomplete elastic collision theory

A technology of elastic collision and safety evaluation, which is applied to the traffic control system of road vehicles, traffic flow detection, traffic control system, etc. It can solve the problems of inability to comprehensively evaluate the risk, reduce the evaluation accuracy of indicators, and improve the evaluation accuracy and data. The collection cycle is short and the collection difficulty is small.

Active Publication Date: 2022-04-22
HEFEI UNIV OF TECH
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

To sum up, the traditional traffic conflict risk index cannot comprehensively evaluate the danger of two vehicles before and after reaching the conflict point; the traditional traffic conflict severity index b

Method used

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  • Traffic unit safety evaluation method based on incomplete elastic collision theory
  • Traffic unit safety evaluation method based on incomplete elastic collision theory
  • Traffic unit safety evaluation method based on incomplete elastic collision theory

Examples

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Example Embodiment

[0074] In the present embodiment, a traffic unit safety evaluation method based on non-complete elastic collision theory, illustrated by example: sacramento, California, USA, I-5, US-50, SR-51, SR-99 these four highway sections for safety evaluation. The selected section on I-5 is located in the southern section of the intersection of I-5 and W EI Camino, with a total length of 88.2 meters and ten lanes in both directions; the selected section on the US-50 is located in the eastern section of the intersection of US-50 and HoweAve, with a total length of 106.6 meters and eight lanes in both directions; the selected section on SR-51 is located in the northern section of the intersection of SR-51 and E St. The total length is 88.2 meters, six lanes in both directions; the selected section on SR-99 is located in the northern section of the intersection of SR-99 and 12thAve, with a total length of 102.9 meters and ten lanes in both directions.

[0075] as Figure 1 As indicated, the ev...

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Abstract

The invention discloses a traffic unit safety evaluation method based on a non-complete elastic collision theory, and the method comprises the steps: 1, selecting a proper straight line conflict risk index, and constructing a non-straight line conflict risk index; 2, establishing a one-dimensional collision model under linear collision and a two-dimensional collision model under nonlinear collision according to a non-complete elastic collision theory, and constructing collision severity index extension based on the models; 3, calculating the conflict risk and severity of the indexes for identifying the traffic units under different parameters, and collecting the accident rate and accident severity of the same place; and 4, selecting the optimal parameter of the index, and evaluating the safety level of the traffic unit. According to the method, the dangerousness before and after the vehicle arrives at the conflict point can be accurately described, the influence of vehicle deformation recovery in the collision springback stage on the conflict severity evaluation result can be accurately represented, and the evaluation precision of the conflict dangerousness index and the conflict severity index is improved, so that the accuracy of traffic unit safety evaluation is improved.

Description

technical field [0001] The invention relates to a traffic unit safety evaluation method based on incomplete elastic collision theory, which belongs to the field of road traffic safety evaluation based on traffic conflict. Background technique [0002] Today, road traffic safety has become a key issue of global concern. Because road traffic accidents are more harmful to human life and property safety, it has become an important tool to prevent road traffic accidents by accurately and efficiently evaluating the safety level of traffic units (road sections or intersections) and proposing targeted road safety improvement measures. Effective means are of great significance to reducing the frequency of accidents and mitigating the serious consequences of accidents. [0003] Predicting the accident frequency and severity of traffic units is an important method for the safety evaluation of traffic units, but the traditional method of predicting accident frequency and severity relie...

Claims

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Application Information

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IPC IPC(8): G08G1/16G08G1/01
CPCG08G1/0125G08G1/16
Inventor 陈一锴卞钰洁陶正彬段睿代高乐翁逸凡黄铭枫王金傲
Owner HEFEI UNIV OF TECH
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