Research on Traffic Congestion Propagation Model Based on Rectangular Method

Abstract

Accurate analysis of traffic congestion propagation characteristics is a prerequisite for predicting traffic congestion status and solving congestion problems. First of all, combining with the actual traffic conditions, the speed extension discrimination index (ESDI) is proposed, and the road congestion state is divided into 5 levels, and the threshold values of each level are defined, thus constructing a congestion mosaic Shi Kongtu. Propose the rectangle method to draw rules, establish the propagation model analysis method of traffic congestion evolution, study the propagation rules and characteristics of congestion and dissipation, and effectively calculate the propagation speed. Finally, taking Yellow Garden Bridge as an example, the research shows that the road traffic state discrimination method based on ESDI can correctly divide the congestion state of road sections, and the traffic congestion propagation model based on rectangular method can effectively obtain the evolution characteristics of road congestion, including frequent or sporadic congestion, starting and ending time of dissipation, propagation speed and occurrence reasons, etc.