Comparative analysis of macroscopic traffic models for evaluating shockwaves under lane closures on an urban highway using the LWR model

IF 3.3 3区工程技术 Q2 TRANSPORTATION

Transportation Letters-The International Journal of Transportation Research Pub Date : 2025-07-03 DOI:10.1080/19427867.2024.2404351

Mohammad Amin Yasari , Iman Aghayan , Gholam Reza Shiran , Farhad Hadadi

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引用次数: 0

Abstract

Lane closure due to traffic crashes is a complex phenomenon that negatively affects the operational performance of highways and leads to secondary lane closures. The present study investigates the effects of shockwaves caused by a heavy vehicle run-off-road crash on a three-lane urban highway in Isfahan, Iran. Additionally, the study simulates the effects of lane closures on shockwaves and density using the Lighthill, Whitham, and Richards (LWR) theory and macroscopic traffic flow based on field data. An analysis of traffic flow models revealed that one-lane and two-lane closures reduce maximum flow by 29% and 61%, respectively, compared to normal conditions. The results showed that the minimum relative error (RE) for lane closures is associated with shockwave models based on the Underwood speed-density model, expanded using the Taylor series. Therefore, the shockwave model based on the Underwood model with Taylor series expansion outperforms other models.

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用LWR模型对城市高速公路封闭车道下冲击波的宏观交通模型进行比较分析

交通事故导致的车道关闭是一种复杂的现象，它会对高速公路的使用性能产生负面影响，并导致次级车道关闭。本研究调查了在伊朗伊斯法罕的一条三车道城市高速公路上发生的重型车辆越野车碰撞所引起的冲击波的影响。此外，该研究利用Lighthill， Whitham, and Richards （LWR）理论和基于现场数据的宏观交通流模拟了车道关闭对冲击波和密度的影响。一项交通流模型分析显示，与正常情况相比，单车道和双车道关闭分别减少了29%和61%的最大流量。结果表明，关闭车道的最小相对误差（RE）与基于Underwood速度-密度模型的冲击波模型有关，该模型采用Taylor级数展开。因此，基于Taylor级数展开的Underwood模型的冲击波模型优于其他模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transportation Letters-The International Journal of Transportation Research TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

6.40

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Transportation Letters: The International Journal of Transportation Research is a quarterly journal that publishes high-quality peer-reviewed and mini-review papers as well as technical notes and book reviews on the state-of-the-art in transportation research. The focus of Transportation Letters is on analytical and empirical findings, methodological papers, and theoretical and conceptual insights across all areas of research. Review resource papers that merge descriptions of the state-of-the-art with innovative and new methodological, theoretical, and conceptual insights spanning all areas of transportation research are invited and of particular interest.