Method for predicting pedestrian-vehicle conflict probability spatial distribution at uncontrolled pedestrian crossings

Abstract

The invention discloses a method for predicting the pedestrian-vehicle conflict probability spatial distribution at uncontrolled pedestrian crossings. The method includes the steps of predicting the motor vehicle-pedestrian conflict probability of each section on a crossing by calculating the arrival probability of motor vehicles and pedestrians; then drawing the predicted conflict probability onto a corresponding position of the crossing; and obtaining a probability distribution map. The method of the invention can be used for predicting the conflict probability distribution of each section on the crossing according to design parameters before a road is built and analyzing the safety of the crossing in advance so as to adjust the road design in the design phase and provide a basis for the evaluation of the road safety.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to a method for predicting the spatial distribution of the probability of pedestrian-vehicle conflict at an uncontrolled pedestrian crossing. Background technique [0002] There are many factors that affect road safety. For a long time, researchers usually use conflicting data as the judgment basis for safety evaluation, or use comprehensive evaluation methods such as gray clustering method, analytic hierarchy process, principal component analysis method, fuzzy comprehensive evaluation method, etc. Analyze various safety indicators to evaluate road safety, and conduct research and analysis from pedestrians, including pedestrian perception, behavior characteristics, acceptable gaps, etc. For the safety of pedestrian crossings, the conflict between pedestrians and motor vehicles is an important factor affecting safety, and the existing research and application of conflicts...

AI Technical Summary

Problems solved by technology

For the safety of pedestrian crossings, the conflict between pedestrians and motor vehicles is an important factor affecting safety, and the existing research and application of conflicts are mostly based on on-site observations, that is, mainly by observing the actual number of conflicts between pedestrians and vehicles at crossings or collecting The historical conflict data of the crossing is used to analyze the conflict, and the ratio of the number of conflicts to the mixed traffic equivalent (TC / TME) is used as the conflict probability to calculate the conflict probability of the entire crossing, but there is no research on the conflict probability The specific distribution on the lane, and because the analysis is based on historical data, it is often only possible to evaluate the existing crosswalk instead of predicting it. Therefore, the existing evaluation method is only applicable to the safety evaluation of the existing crosswalk. It is not applicable to newly built crossings or crossings in the design stage

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