Evaluation method of safety level in plane intersection under urban traffic environment

Abstract

The invention discloses an evaluation method of safety level in a plane intersection under urban traffic environment. The evaluation method comprises the following steps of establishing a PARAMICS microscopic simulation model of the plane intersection under the urban traffic environment through field data collection and by applying microscopic simulation software PARAMICS, carrying out parameter calibration on the simulation model, changing a simulation random seed, carrying out simulation for multiple times, outputting a simulation vehicle track document, analyzing the simulation vehicle track document by applying conflict analysis software SSAM, outputting various simulation conflict numbers such as tailgating conflict, track changing conflict and intersection conflict, and thus carrying out safety evaluation of the plane intersection under the urban traffic environment. According to the evaluation method disclosed by the invention, the defects that in a past traffic conflict evaluation method, the stability is bad, the influence on the safety evaluation due to subjective judgement of a collection person is larger, and the comparability is in lack are overcome, and the evaluation method has an actual engineering applying value in respect of carrying out the safety evaluation of the plane interaction under the urban traffic environment.

Description

technical field [0001] The invention relates to the field of traffic safety, in particular to a method for evaluating the safety level of intersections in urban traffic environments by using microscopic simulation software PARAMICS and conflict analysis software SSAM. Background technique [0002] In the field of urban transportation, as the urban traffic environment becomes more and more complex, residents' safety awareness is increasing, and urban traffic safety has received more and more attention. However, the evaluation method of urban traffic safety started relatively late. Compared with foreign countries, our country is restricted by the insufficient accident database in the field of urban level intersection safety evaluation, and often can only use some alternative evaluation indicators to evaluate the safety of urban level intersections. Among them, the traffic conflict technology is used most frequently, but because the collection process of traffic conflict is gre...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the problems of large data randomness and lack of comparability in the existing traffic conflict technology, the present invention provides

Images