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Method of formulating suggested vehicle speed based on safety risk and distance

A vehicle speed and distance technology, applied in the field of suggested vehicle speed formulation based on safety risks and distances, to achieve the effect of improving road traffic safety, reducing speed differences, and reducing traffic safety risks

Active Publication Date: 2021-04-30
TONGJI 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 provide a method for formulating suggested vehicle speeds based on safety risks and distances, to overcome the lack of consideration of variable factors such as the environment in existing maximum speed limit strategies, and to formulate suggested vehicle speeds dynamically in real time, thereby ensuring road traffic safety

Method used

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  • Method of formulating suggested vehicle speed based on safety risk and distance
  • Method of formulating suggested vehicle speed based on safety risk and distance
  • Method of formulating suggested vehicle speed based on safety risk and distance

Examples

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Embodiment 1

[0067] The method for formulating the recommended vehicle speed under severe weather conditions provided by the embodiment of the present invention is calculated by taking the data of the G15 Shenhai Expressway (Shanghai Section) as an example.

[0068] (1) Obtain information such as traffic flow state conditions, road characteristic conditions, weather conditions, etc.

[0069] G15 Shenhai Expressway (Shanghai Section) is a north-south expressway in the western part of Shanghai. It starts from the junction of Jiading District and Taicang City in the north, connects with the Shanghai-Suzhou border of Shenhai Expressway (Jiangsu Section), and ends in Jinshan District and Pinghu in the south. At the junction of the city, it intersects with Shenhai Expressway (Zhejiang section), and passes through Jiading District, Qingpu District, Songjiang District and Jinshan District in turn to the southwest. G15 Shenhai Expressway (Shanghai Section) is located between Shanghai S20 Outer Ring...

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Abstract

The invention discloses a method for formulating a suggested vehicle speed based on safety risks and distances, comprising: acquiring road traffic flow conditions, road characteristic conditions, and weather conditions; integrating and matching traffic flow data, road characteristic data, and weather data; The risk assessment model calculates the traffic risk; the traffic risk value obtained by the traffic risk assessment model is used for clustering, and the traffic risk early warning classification is implemented; the safe speed based on the traffic risk distribution is calculated, and according to the traffic risk distribution under different conditions, the traffic risk value less than The traffic flow state equal to 0.2 is used as the safe speed determination range, and the 85th percentile speed of the vehicle running speed in this state is regarded as the safe driving speed; the calculation is based on the stopping sight distance (for example, the road without strict physical separation needs to calculate the passing sight distance) The safe driving speed of the road; compare the road safe driving speed obtained by the two methods, and give the suggested speed of the road under different conditions (including weather conditions, road conditions, etc.).

Description

technical field [0001] The invention belongs to the field of traffic safety management, in particular to a method for formulating suggested vehicle speeds based on safety risks and distances. Background technique [0002] In recent years, the construction of my country's road transportation infrastructure has been accelerating, and the mileage of traffic has continued to increase. While road traffic has brought huge social and economic benefits, the problem of traffic accidents has also attracted more and more attention from the society. In road traffic safety management, vehicle speed management is an important management strategy. [0003] Generally speaking, the driver will form a psychologically considered safe driving speed, that is, the subjective expected speed, after comprehensive consideration of factors such as road conditions, traffic conditions, and the performance of the vehicle he is driving during the driving process. However, the actual traffic flow is affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/0967
CPCG08G1/0967
Inventor 王艳丽吴兵卢建涛翟犇
Owner TONGJI UNIV
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