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A Fault Tree Model-Based Analysis Method for Causes of Highway Traffic Accidents

A technology for traffic accidents and highways, which is applied to the traffic control system of road vehicles, traffic flow detection, traffic control system, etc. It can solve the problems of low accuracy of cause analysis and inability to determine the weight of accident influencing factors. , to improve the accuracy of the cause analysis, the results are reliable and effective, and the process is simple and easy to understand.

Inactive Publication Date: 2021-03-23
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the cause of formation analysis of highway traffic accidents is still limited to the qualitative analysis of accident causes, can not well determine the defects such as the size of the weight of each accident influencing factor, resulting in the accuracy of the cause of formation analysis of highway traffic accidents low problem, and proposed a fault tree model-based analysis method for the cause of highway traffic accidents

Method used

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  • A Fault Tree Model-Based Analysis Method for Causes of Highway Traffic Accidents
  • A Fault Tree Model-Based Analysis Method for Causes of Highway Traffic Accidents
  • A Fault Tree Model-Based Analysis Method for Causes of Highway Traffic Accidents

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine figure 1 Describe this embodiment, the specific process of the expressway traffic accident cause analysis method based on the fault tree model of this embodiment is:

[0028] Step 1. Collect and classify traffic accident data;

[0029] Step 2, according to the traffic accident data information of step 1, establish the expressway traffic accident fault tree model;

[0030] Step 3: Carry out qualitative analysis on the fault tree model of expressway traffic accidents, solve the minimum cut set, and determine all the accident chains of the top event;

[0031] Step 4, carry out the quantitative analysis from the top event to the basic event to the expressway traffic accident fault tree model, obtain the main reason chain of the expressway traffic accident;

[0032] Step 5: Quantitatively analyze the fault tree model of highway traffic accidents from the basic event to the top event, and obtain the proportion of the four factors o...

specific Embodiment approach 2

[0033] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: the traffic accident data is collected and sorted in the step one; the specific process is:

[0034] Collect traffic accident data on expressways in recent years. The total amount of traffic accident data is at least 300, and the more data, the more reliable the results. For the collection of accident data, you can seek help from the public security traffic management department and the highway production department.

[0035] Filter the traffic accident data collected on expressways. Since the expressway is exclusively for cars and all access is controlled, pedestrians are prohibited from entering the expressway. Therefore, the accidents between motor vehicles and pedestrians are excluded, and only the accidents between motor vehicles are analyzed. accidents, and then classify highway traffic accidents according to the four aspects of driver, vehicl...

specific Embodiment approach 3

[0037] Specific embodiment three: what this embodiment is different from specific embodiment one or two is: in described step 2, according to the traffic accident data information of step 1, set up expressway traffic accident fault tree model; Concrete process is:

[0038] The structure of the fault tree is as follows figure 2 As shown, it consists of multiple layers of events. The top of the tree represents a certain type of accident, called the top event; the bottom of the tree represents the most basic cause of the accident, called the basic event; the middle of the tree represents the intermediate cause of the accident, called the intermediate event. In addition, events that cannot or do not need to be further analyzed are called omitted events. The causal relationship of various events is represented by two logic gates, "AND" gate and "OR" gate.

[0039]The road traffic system is a dynamic system composed of people, vehicles, roads and the environment. The occurrence o...

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Abstract

The invention relates to a highway traffic accident reason analysis method based on a fault tree model and aims at solving the defects that highway traffic accident reason analysis is mostly limited by the qualitative analysis of accident causes, and accident influence factor weight size and the like cannot be determined well, and therefore, the accuracy for the highway traffic accident reason analysis is low. The process is as follows: 1, carrying out collection and classified arrangement on traffic accident data; 2, constructing a highway traffic accident fault tree model; 3, determining allaccident chains of the events; 4, acquiring the main reason chain of highway traffic accidents; and 5, acquiring the proportions of four factors including drivers, vehicles, roads and traffic environment in the traffic accidents. The method can be used for the technical field of highway traffic accident reason analysis.

Description

technical field [0001] The invention relates to a method for analyzing the cause of expressway traffic accidents based on a fault tree model. Background technique [0002] In recent years, my country's expressway has achieved rapid development, and its mileage has reached 131,000 kilometers, ranking first in the world, providing great convenience for people's lives. With the increase of highway mileage and the improvement of infrastructure, the accident rate per unit mileage and the death rate per 100 million vehicle kilometers tend to decrease, but the total number of accidents remains high, and the severity of accidents is increasing year by year, and the safety situation is still severe. Seriously affect the safety of people's lives and property. Therefore, it is very meaningful to analyze the causes of expressway traffic accidents, analyze the mechanism of traffic accidents, and propose corresponding safety improvement measures to improve the traffic safety situation fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
CPCG08G1/0125
Inventor 孟祥海崔洪海柳昕汝焦明伟朴忠源
Owner HARBIN INST OF TECH
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