A Cellular Automata Traffic Flow Model Based on Multi-trigger-headways

摘要

The paper provides a more practical cellular automata traffic flow model for a dual-lane highway traffic system by introducing the rules of emergency braking and gentle braking, along with their trigger headways, and make it available to Intelligent Transportation System. According to the results of computer simulation, the variation trends of average velocity, velocity variance, braking times and overtaking times under different traffic intensities and expected headways are analyzed. An evaluation for the performance of different expected headways in ITS under different traffic intensities is made in order to find out the optimum range.