A macroscopic traffic model based on weather conditions

• 来源期刊: 中国物理B（英文版）
• 关键词: macroscopic traffic flow anticipation Payne–Witham (PW) model adverse weather
• 年，卷（期）: 2018,（7）
• 页码范围: 200-211
• 页数: 12页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/7/070202

摘要

A traffic model based on the road surface conditions during adverse weather is presented. The surface of a road is affected by snow, compacted snow, and ice, which affects the traffic behavior. In this paper, a new macroscopic traffic flow model based on the transition velocity distribution is proposed which characterizes traffic alignment under adverse weather conditions. Two examples are considered to illustrate the effect of the transition velocity behavior on traffic velocity and density. Simulation results are presented which show that this model provides a more accurate characterization of traffic flow behavior than the well known Payne–Whitham model. The proposed model can be used to reduce accidents and improve road safety during adverse weather conditions.