Variable speed limit modelling to improve traffic safety and efficiency of mixed traffic flow by a two-stage framework

IF 3.1 2区工程技术 Q2 TRANSPORTATION

Transportmetrica A-Transport Science Pub Date : 2025-05-04 DOI:10.1080/23249935.2023.2253476

Jieling Jin , Helai Huang , Ye Li , Gongquan Zhang , Yuxuan Dong , Bo Zhou , Hongli Xue

{"title":"Variable speed limit modelling to improve traffic safety and efficiency of mixed traffic flow by a two-stage framework","authors":"Jieling Jin , Helai Huang , Ye Li , Gongquan Zhang , Yuxuan Dong , Bo Zhou , Hongli Xue","doi":"10.1080/23249935.2023.2253476","DOIUrl":null,"url":null,"abstract":"<div><div>A two-stage variable speed limits (VSL) modelling framework is proposed to enhance traffic safety and efficiency at freeway bottlenecks with mixed traffic flow comprising both human-driven and autonomous vehicles. The first-stage macroscopic VSL control framework is based on an extended cell transmission model (ECTM) and a VSL optimal control model. The ECTM serves as a traffic state predictor and characterises mixed traffic flow by modelling various characteristics such as driving behaviours and flow performance. The ECTM-based optimal control model aims to improve safety and efficiency. The second-stage microscopic validation framework is designed using the VISSIM_COM to validate the effectiveness and sophistication of the proposed VSL strategy. The proposed strategy is compared with a fixed speed limit strategy (FSL) and a VSL strategy considering only efficiency improvement (VSL_E). The results demonstrate that the proposed strategy improves traffic efficiency compared to the FSL and significantly outperforms VSL_E in traffic safety.</div></div>","PeriodicalId":48871,"journal":{"name":"Transportmetrica A-Transport Science","volume":"21 2","pages":"Pages 1-25"},"PeriodicalIF":3.1000,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transportmetrica A-Transport Science","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S2324993523003068","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TRANSPORTATION","Score":null,"Total":0}

引用次数: 0

Abstract

A two-stage variable speed limits (VSL) modelling framework is proposed to enhance traffic safety and efficiency at freeway bottlenecks with mixed traffic flow comprising both human-driven and autonomous vehicles. The first-stage macroscopic VSL control framework is based on an extended cell transmission model (ECTM) and a VSL optimal control model. The ECTM serves as a traffic state predictor and characterises mixed traffic flow by modelling various characteristics such as driving behaviours and flow performance. The ECTM-based optimal control model aims to improve safety and efficiency. The second-stage microscopic validation framework is designed using the VISSIM_COM to validate the effectiveness and sophistication of the proposed VSL strategy. The proposed strategy is compared with a fixed speed limit strategy (FSL) and a VSL strategy considering only efficiency improvement (VSL_E). The results demonstrate that the proposed strategy improves traffic efficiency compared to the FSL and significantly outperforms VSL_E in traffic safety.

查看原文本刊更多论文

通过两阶段框架建立可变限速模型以提高混合交通流的交通安全和效率

提出了一种两阶段可变限速（VSL）建模框架，以提高人类驾驶和自动驾驶车辆混合交通流下高速公路瓶颈的交通安全性和效率。第一阶段VSL宏观控制框架基于扩展细胞传输模型和VSL最优控制模型。ECTM作为交通状态预测器，通过模拟各种特征（如驾驶行为和流量性能）来表征混合交通流。基于ectm的最优控制模型旨在提高安全性和效率。使用VISSIM_COM设计了第二阶段的微观验证框架，以验证所提出的VSL策略的有效性和复杂性。将该策略与固定限速策略（FSL）和仅考虑效率提高的VSL策略（VSL_E）进行了比较。结果表明，与FSL相比，该策略提高了交通效率，在交通安全方面显著优于VSL_E。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Transportmetrica A-Transport Science TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

8.10

自引率

12.10%

发文量

期刊介绍： Transportmetrica A provides a forum for original discourse in transport science. The international journal''s focus is on the scientific approach to transport research methodology and empirical analysis of moving people and goods. Papers related to all aspects of transportation are welcome. A rigorous peer review that involves editor screening and anonymous refereeing for submitted articles facilitates quality output.