Acta mathematica scientia,Series A ›› 2026, Vol. 46 ›› Issue (3): 1025-1027.

Previous Articles     Next Articles

The Cauchy Problem for an Improved Aw-Rascle-Zhang Model

Tingting Chen1(), Weifeng Jiang2,*(), Tong Li3(), Yibo Lai2()   

  1. 1 School of Artificial Intelligence, Jianghan University, Wuhan 430056
    2 2College of Science, China Jiliang University, Hangzhou 310018
    3 Department of Mathematics, The University of Iowa, Iowa City, IA 52242
  • Received:2024-11-11 Revised:2025-10-21 Online:2026-06-26 Published:2026-06-16
  • Contact: Weifeng Jiang E-mail:chenting0617@163.com;casujiang89@cjlu.edu.cn;tong-li@uiowa.edu;2200805210@cjlu.edu.cn
  • Supported by:
    NSFC(1240012056);Research Fund of Jianghan University(2024JCYJ05)

Abstract:

This paper studies the Cauchy problem for an improved Aw-Rascle-Zhang traffic flow model exhibiting non-genuine nonlinearity. The Riemann solution structure for this model contains not only shocks, rarefaction waves, and contact discontinuities, but also composite waves. A method based on a modified Glimm scheme is developed within the framework of the space of functions of bounded variation. The key aspect of this method lies in constructing a wave interaction functional using the variation of Riemann invariants, thereby controlling the total variation of the solution during its time evolution. Therefore we establish the existence of a global weak solution for the Cauchy problem with large initial data.

Key words: cauchy problem, improved Aw-Rascle-Zhang model, modified Glimm's scheme, BV solutions, large initial data.

CLC Number: 

  • O175.23
Trendmd