Research Of Mixed Slow Traffic Conflict Mechanism In The Crosswalk

In this paper,slow traffic means mixed electric bicycles and pedestrian traffic.In recent years,with the amount of electric bike increasing,the electric bike has become the main transport of resident trip.Management and security of electric bikes has become a hotspot of scholars.When mixed slow traffic across the crosswalk,there are many minor conflicts between the slow traffic that make people uncomfortable and insecure.It's important to research mixed slow traffic conflict mechanism that can promote China's slow traffic system development and improve road safety and comfort.This thesis studies mixed slow traffic conflict in the crosswalk that is defined and classified.This paper researches mixed slow traffic flow characteristics and conflict characteristics and builds mixed slow traffic model of crossing the street.Based on analysis of the relationship between traffic conflicts and mixed slow traffic conflict,this paper builds mixed slow traffic conflict model.In this paper,based on the survey data,we study mixed slow traffic composition and distribution when people cross the street.By quantitative studying on speed characteristics of electric bicycles and pedestrian in crosswalk,it indicates that mixed state influence speed of slow traffic because we find the speed was lower than the existing research results.This thesis defines and classifies mixed slow traffic conflict in crosswalk and builds ? to determine the value of conflict as indicators.We can get? by examples analysis.Based on conflict discriminant model,this paper defines severity of mixed slow traffic conflict and analyzes the severity of different type of slow traffic conflicts.An improved mixed slow traffic conflict model is built by analyzing microscopic behavioral characteristics of slow traffic in crosswalk and considering the traffic behavior of slowdown and steering.This paper expands the driving force of slow traffic including self-driving force,crosswalk exports attractive,movable space attractive and appealing relatives.Repulsive force is improved by the opposite sex,the relative velocity and tolerance range of slow traffic.Force range between slow traffic and obstacles is improved and obstacles are divided into two types of obstacles,soft and hard.This paper analyzes relationship between mixed slow traffic conflict and the factors of traffic density,traffic behavior and other factors qualitatively and quantitatively.This paper builds mixed slow traffic conflict models in the crosswalk by analyzing the relationship between traffic conflict and traffic density.The crossing behavior is divided into four categories by Delphi method.Mixed slow traffic comfort in crosswalk comfortable degree is divided into five grades according to the average collision rate.Four significant factors include electric bicycle density,pedestrian density irregularities number and street behavior combined value are selected by statistical methods.Finally,this paper builds a multi-factor cumulative Logistic comfort model and estimates the model parameter.The model is tested by wald value.