Suggested vehicle speed making method based on safety risks and distances

Abstract

The invention discloses a suggested vehicle speed making method based on safety risks and distances. The method comprises the steps that: road traffic flow conditions, road feature conditions and weather conditions are acquired; the traffic flow data, the road characteristic data and the weather data are fused and matched, and traffic risks through a traffic risk assessment model are calculated; clustering is performed by using the traffic risk values obtained by the traffic risk assessment model, and traffic risk early warning grading is implemented; a safety vehicle speed based on traffic risk distribution is calculated, a traffic flow state of which the traffic risk value is less than or equal to 0.2 is selected as a safety vehicle speed determination range according to the traffic riskdistribution under different conditions, and the 85th vehicle speed of the vehicle running speed in the state is selected as a safety running speed; the safe driving speed based on the parking sightdistance (for example, the meeting sight distance needs to be calculated on a road without strict physical separation) is calculated; and the road safe driving speeds obtained by the two methods are compared, and the suggested speeds of the road under different conditions (including weather conditions, road conditions and the like) are given.

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...

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

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