A new continuum model for traffic flow and numerical tests

被引：504
|
作者：
Jiang, R [1 ]
Wu, QS [1 ]
Zhu, ZJ [1 ]
机构：
[1] Univ Sci & Technol China, Inst Engn Sci, Hefei 230026, Peoples R China
来源：
TRANSPORTATION RESEARCH PART B-METHODOLOGICAL | 2002年 / 36卷 / 05期
基金：
中国国家自然科学基金;
关键词：
traffic flow; continuum model; characteristic speed; car-following;
D O I：
10.1016/S0191-2615(01)00010-8
中图分类号：
F [经济];
学科分类号：
02 ;
摘要：
A new continuum traffic flow model is developed in this paper based on an improved car-following model. In this new continuum model, the speed gradient replaces the density gradient in the equation of motion, and this replacement guarantees the property that the characteristic speeds are always less than or equal to the macroscopic flow speed. This new model also overcomes the backward travel problem that exists in many high-order continuum models. Shock waves, rarefaction waves, stop-and-go waves, and local cluster effects can be obtained from this new model and are consistent with the diverse nonlinear dynamical phenomena observed in the freeway traffic. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：405 / 419
页数：15
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