Expressway single-point speed measurement equipment deterrent range analysis method

A technology for expressway and range analysis, which is used in traffic flow detection, traffic control systems for road vehicles, instruments, etc., and can solve problems such as insufficient accuracy.

CN112509336AActive Publication Date: 2021-03-16TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-16

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Abstract

The invention provides an expressway single-point speed measurement equipment deterrent range analysis method, which comprises the steps of calculating the upstream and downstream accident densities of single-point speed measurement equipment on the basis of the existing single-point equipment and accident big data, and accurately measuring and calculating the effective deterrent range interval ofthe single-point speed measurement equipment for overspeed violation through an accident density distribution curve trend chart. Measurement and calculation basic data is obtained based on historicaldata and does not depend on personal experience of technicians, and it is ensured that the accurate and objective deterrent range of the speed measurement equipment is obtained.
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Description

technical field

[0001] The invention relates to the technical field of intelligent traffic control, in particular to a method for analyzing the deterrent range of expressway single-point speed measuring equipment. Background technique

[0002] The expressway has the characteristics of being completely closed and the overall speed is high, and vicious traffic accidents occur frequently, and speeding is an important cause of accidents. According to the statistics. Traffic control departments usually rely on motor vehicle speedometers to investigate and deal with violations of speeding. At the same time, because drivers know the existence of speedometers, they will consciously control their own speed, thereby reducing the probability of accidents before traffic accidents occur. Therefore, installing speed measuring equipment on the expressway with an appropriate density is also an effective means to reduce accidents; however, too dense installation of speed measuring equipment...

Examples

Embodiment Construction

[0031] A method for analyzing the deterrent range of expressway single-point speed measuring equipment in the present invention is characterized in that it includes the following steps.

[0032] S1: Based on historical data, select an isolated single-point speed measurement equipment set P(p 1 ,p 1 ,...,p n );

[0033] Among them, the single-point speed measuring device p i is an isolated device, in this embodiment, the isolated device p i It means that there are no other motor vehicle speedometers within 10 kilometers upstream and downstream of the equipment, 1≤i≤n. The specific isolation threshold is set according to the hardware conditions of the speed measuring equipment in the current historical data and the specific conditions of the expressway.

[0034] In this embodiment, the deterrent range of single-point speed measuring equipment is analyzed with the speed measuring equipment and overspeed accident data of 42 national expressways. From 2018 to 2019, there were...