Highway real-time operation risk calculation method

Abstract

The invention relates to a highway real-time operation risk calculation method. According to the highway real-time operation risk calculation method, a multi-factor-integrated entropy model is adoptedto analyze and calculate the real-time operation of the traffic flow and environment of highways. In accordance with the entropy model, collected data are pre-processed on the basis of real-time traffic flow data and real-time environmental change data acquisition; and on the basis of the real-time operation conditions of the highways, correlation analysis, a random forest model, normalization processing, and the like are adopted with traffic flow risk factors and external environmental factors integrated so as to establish a risk entropy model that can analyze the real-time operation conditions of the highways. With the highway real-time operation risk calculation method of the invention adopted, risk identification, evaluation and analysis can be performed on the real-time operation risks of the highways; reference can be provided for the real-time risk management of the highways; and administration staff can conduct risk disposal and prevention so as to avoid or reduce economic andproperty losses caused by high-risk situations.

Description

technical field [0001] The invention relates to the technical field of highway traffic, in particular to a method for calculating real-time running risks of expressways. Background technique [0002] With the continuous increase of traffic demand, expressways are facing traffic congestion and traffic safety problems. The higher the driving risk on the road, the more seriously the impact on vehicle driving safety. In practice, traffic safety and traffic accidents are two opposing concepts. The absence of accidents on the road does not mean complete safety. At this time, the risk of traffic accidents still exists. Therefore, in order to meet the basic characteristics of high speed, high efficiency, safety and comfort of expressway, it is necessary to properly analyze its risk problems and carry out targeted risk management according to the risk state of road operation. [0003] In reality, the factors affecting traffic safety are complex, including differences in road infrast...

AI Technical Summary

Problems solved by technology

These methods roughly reflect the current level of engineering risk analysis technology, but they lack real-time responsiveness in practical applications, and the real-time feedback on road operation conditions is not strong.

Judging from the existing research results, there is still a lack of a relatively complete set of risk assessment methods that are oriented to the macro-traffic flow operation and can reflect the real-time operation of the road, so as to provide risk decision support for road managers.

Images