Expressway variable speed limit control system and method for rear-end collision risk prevention and control

A highway and control method technology, applied in the field of traffic safety, can solve the problems of not considering the impact of traffic conditions on traffic safety, unable to dynamically control the maximum speed limit of highways, etc., so as not to reduce traffic efficiency, reduce the probability of rear-end collisions, The effect of improving safety

Active Publication Date: 2021-03-02
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the maximum speed limit of vehicles on the existing expressway does not consider the impact of traffic conditions on traffic safety, resulting in the i

Method used

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  • Expressway variable speed limit control system and method for rear-end collision risk prevention and control
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  • Expressway variable speed limit control system and method for rear-end collision risk prevention and control

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specific Embodiment approach 1

[0037] Specific implementation mode 1: In this implementation mode, the expressway variable speed limit control system for rear-end collision risk prevention and control includes:

[0038] Information detection module, control module and information release module;

[0039] The information detection module is used to detect the cross-section traffic flow, occupancy rate, vehicle speed, acceleration and headway data of the road section in real time, and feed back to the control module;

[0040] The control module is used to receive the data detected by the information detection module, judge the risk level of rear-end collision of the road section, calculate the maximum speed limit value of the road section, and output it to the information release module;

[0041] The information release module is used to release the maximum speed limit value and early warning information of the road section in real time, prompting the driver to adjust the driving speed in time to ensure drivi...

specific Embodiment approach 2

[0042] Specific embodiment two: the difference between this embodiment and specific embodiment one is that: the information detection module is an integrated detection device of Leishi;

[0043] The information publishing module is a gantry type variable speed limit information display screen.

[0044] Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0045] Specific implementation mode three: In this implementation mode, the specific steps of the expressway variable speed limit control method for the prevention and control of rear-end collision risk are as follows:

[0046] Step 1: Traffic information detection and processing; the specific process is:

[0047] Obtain the real-time traffic data and the initial maximum speed limit value V of the road section i in the period T 0 ;

[0048] (1) According to the relevant parameters of the road alignment condition and the change of the roadside environment, the expressway is divided into control sections, and the sections are numbered as i=1, 2, 3, ... according to the driving direction, and the section interval is 1-5km, each All road sections need to be equipped with information detection modules;

[0049] A variable speed limit node is set upstream of the starting point of each control section, numbered P according to the driving direction i , which is consistent with the ...

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Abstract

The invention discloses an expressway variable speed limit control system and method for rear-end collision risk prevention and control, and relates to an expressway variable speed limit control system and method. The objective of the invention is to solve a problem that the highest speed limit of the expressway cannot be dynamically controlled because the influence of the traffic state on the traffic safety is not considered in the setting of the highest speed limit of vehicles on the expressway. The system comprises an information detection module, a control module and an information releasemodule. The information detection module is used for detecting a section traffic flow, occupancy, a vehicle speed, acceleration and time headway data of a road section in real time and feeding back the data to the control module; the control module is used for receiving the data detected by the information detection module, judging the rear-end collision risk level of the road section, calculating the highest speed limit value of the road section and outputting the highest speed limit value to the information release module; and the information release module is used for publishing the highest speed limit value and early warning information of the road section in real time, prompting a driver to adjust the driving speed in time and ensuring driving safety. The invention belongs to the field of traffic safety.

Description

technical field [0001] The invention belongs to the field of traffic safety, and in particular relates to a variable speed limit control system and a control method for expressways. Background technique [0002] With the improvement of my country's urbanization level and car ownership, the demand for expressway traffic is also increasing. Vehicle rear-end accidents frequently occur on expressways, which have become the main type of traffic accidents. Failure to maintain a safe distance between vehicles is the cause of such accidents. the main reason. At present, the setting of the maximum speed limit of vehicles on expressways takes into account road conditions, weather conditions, and vehicle type factors. A uniform fixed speed limit value is set on the main line without considering the impact of traffic conditions on traffic safety. Therefore, there is a lack of traffic-based A dynamic control method for the maximum speed limit of expressways based on state detection. [...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/052G08G1/065G08G1/16
CPCG08G1/0125G08G1/052G08G1/065G08G1/166
Inventor 曲昭伟张璐雨白乔文宋现敏陶鹏飞李志慧田婧高雨虹
Owner JILIN UNIV
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