Abstract:

Microscopic traffic simulation has high importance in the urban traffic control systems, and the establishment of a microscopic simulation model is one of its main contents.The Krauss model is a microscopic,spacecontinuous,carfollowing model based on the safe speed paradigm.In order to avoid appearing deceleration mutation,this paper proposes a new model based on the Krauss model.This model considers the gradual process of deceleration in vehicle's braking.By implementing the new model on the SUMO platform (Simulation of Urban MObility ) and carrying out experiments for the two models under the same situation,the new model achieves good results in avoiding the deceleration mutation to a degree and has better performance on several parameters.

Key words: traffic engineering;traffic simulation;SUMO simulation platform;carfollowing model;traffic flow;safe velocity