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Road intersection safety risk index calculation method

A technology of safety risk and calculation method, which is applied in the field of safety risk assessment of road intersections, can solve problems such as high cost, low reference value, and loose relationship between safety risk index and actual safety performance, so as to reduce hazards and optimize The effect of the design

Pending Publication Date: 2020-12-29
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of using the existing safety evaluation method is high, and the safety level can only be roughly evaluated from a single perspective, and the information at the micro level cannot be obtained. The relationship between the obtained safety risk index and the actual safety performance is not close, and the reference value is not good. high

Method used

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  • Road intersection safety risk index calculation method
  • Road intersection safety risk index calculation method
  • Road intersection safety risk index calculation method

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Embodiment Construction

[0023] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associa...

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Abstract

The invention discloses a road intersection safety risk index calculation method, and the method comprises the steps: building a simulation model of a road intersection in a VISSIM, carrying out the simulation experiment, and outputting a track file; analyzing the track file in the SSAM to obtain a conflict statistical result, wherein the conflict statistical result comprises an included angle between conflict vehicle directions and a conflict attribute metering index; dividing conflicts of the road intersection into conflict types according to different danger levels and the included angles between the conflict vehicle directions; calculating a conflict risk index of each conflict in each conflict type according to the conflict attribute metering index; calculating the danger weight of each conflict type according to the value distribution of the conflict risk index of each conflict in each conflict type; and obtaining the safety risk index of the road intersection according to the danger weight of each conflict type and the statistical number of each conflict type.

Description

technical field [0001] The invention relates to the field of traffic safety, in particular to a safety risk assessment method for road intersections in a traffic road network. Background technique [0002] In the traffic road network, there are a large number of streamline intersections at road intersections, and the probability of traffic accidents is higher than other locations, which poses a great threat to the safety and property of road users. In order to improve the safety performance of intersections, researchers have been working on improving the design of intersections, such as roundabouts and turbine intersections. The original intention of these design schemes is to improve the safety level, but there is no uniform and effective method for how to compare the safety performance of different design schemes to select the best scheme. Existing methods, such as detecting deceleration behavior, counting collision points, and counting accidents, etc., all require a larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26G08G1/01G06F30/20
CPCG06Q10/0635G06Q10/06393G06Q50/26G08G1/0104G08G1/0125G06F30/20
Inventor 陆林军刘邱佳邓佳莉杨军
Owner SHANGHAI JIAO TONG UNIV
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