Multimodal Transportation最新文献_第10页

Modeling and optimization for carsharing services: A literature review 汽车共享服务的建模与优化:文献综述

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100028

Ting Wu, Min Xu

引用次数: 8

Passenger car equivalent travel time of a truck 客车卡车等效行驶时间

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100031

Srinivas S. Pulugurtha, Ravina N. Jain

{"title":"Passenger car equivalent travel time of a truck","authors":"Srinivas S. Pulugurtha, Ravina N. Jain","doi":"10.1016/j.multra.2022.100031","DOIUrl":"https://doi.org/10.1016/j.multra.2022.100031","url":null,"abstract":"<div><p>The Highway Capacity Manual (HCM) recommends the use of passenger car equivalent (PCE) to account for the influence of trucks on the operational performance of roads. Researchers have derived PCE based on capacity, headway, queue discharge, and delay in the past. However, it is not clear if the influence of trucks on the operational performance of roads would be the same in terms of travel time. The focus of this research is to assess the influence of trucks on the transportation system performance from a travel time perspective. The travel time data for Mecklenburg County (urban area) and Iredell County (rural area) were gathered for the year 2017 and processed to generate sixty-nine datasets accounting for the area type, temporal variation, reference speed, and traffic condition. Ordinary Least Square (OLS) regression models were then developed to examine the relationship between the travel time of trucks (dependent variable) and the travel time of passenger cars (explanatory variable). The coefficients indicate that the average travel time (ATT) of trucks is greater than the ATT of passenger cars irrespective of the dataset used for analysis, except in two cases of Iredell County. The ATT of trucks could be up to 1.18 times the ATT of passenger cars in some cases. The area type, day-of-the-week (DOW), time-of-the-day (TOD), reference speed of the link, and traffic condition at the time of data collection all seem to influence the ATT of trucks at different scales compared to the ATT of passenger cars.</p></div>","PeriodicalId":100933,"journal":{"name":"Multimodal Transportation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772586322000314/pdfft?md5=b86412b6c25a5363c8be9b30a2f2614b&pid=1-s2.0-S2772586322000314-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72109904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A survey of COVID-19 in public transportation: Transmission risk, mitigation and prevention 新冠肺炎在公共交通中的传播风险、缓解和预防调查

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100030

Xiaoli Liu, Pranvera Kortoçi, Naser Hossein Motlagh, Petteri Nurmi, Sasu Tarkoma

{"title":"A survey of COVID-19 in public transportation: Transmission risk, mitigation and prevention","authors":"Xiaoli Liu, Pranvera Kortoçi, Naser Hossein Motlagh, Petteri Nurmi, Sasu Tarkoma","doi":"10.1016/j.multra.2022.100030","DOIUrl":"https://doi.org/10.1016/j.multra.2022.100030","url":null,"abstract":"<div><p>The COVID-19 pandemic is posing significant challenges to public transport operators by drastically reducing demand while also requiring them to implement measures that minimize risks to the health of the passengers. While the collective scientific understanding of the SARS-CoV-2 virus and COVID-19 pandemic are rapidly increasing, currently there is a lack of understanding of how the COVID-19 relates to public transport operations. This article presents a comprehensive survey of the current research on COVID-19 transmission mechanisms and how they relate to public transport. We critically assess literature through a lens of disaster management and survey the main transmission mechanisms, forecasting, risks, mitigation, and prevention mechanisms. Social distancing and control on passenger density are found to be the most effective mechanisms. Computing and digital technology can support risk control. Based on our survey, we draw guidelines for public transport operators and highlight open research challenges to establish a research roadmap for the path forward.</p></div>","PeriodicalId":100933,"journal":{"name":"Multimodal Transportation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772586322000302/pdfft?md5=446f7743fa2cf03bf77074597b9075d2&pid=1-s2.0-S2772586322000302-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72109905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Urban multimodal traffic assignment 城市多式联运分配

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100027

Yu Jiang, Otto Anker Nielsen

引用次数: 8

Optimal consolidation center to improve urban freight transport: a case of student accommodation in a higher education institution 优化整合中心以改善城市货运——以某高校学生住宿为例

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100032

Oyegoke Teslim Bukoye, Sathvik Gadiraju

{"title":"Optimal consolidation center to improve urban freight transport: a case of student accommodation in a higher education institution","authors":"Oyegoke Teslim Bukoye, Sathvik Gadiraju","doi":"10.1016/j.multra.2022.100032","DOIUrl":"https://doi.org/10.1016/j.multra.2022.100032","url":null,"abstract":"<div><p>Cities across the world are expanding as a result of urbanization, resulting in growing demand for goods and services, mainly through online sales. This has resulted in the need for an urban consolidation center (UCC) to minimize travel and optimize deliveries, particularly in student accommodation settings. In this paper, we examine how an optimal consolidation center can improve urban freight transport. We conducted a multi-method and in-depth case study of student halls of residence within a UK higher education institution. In addition, we analyzed a rich secondary dataset including location, parcel, and vehicle data. We developed and tested three scenarios to present an optimal urban consolidation scenarios model using a Vehicle Routing Problem (VRP) solver; indicating the transportation costs, distance travelled, and CO<sub>2</sub> emitted. The operationalization of the optimal UCC as well as the limitations on direct and indirect cost, accessibility, and collaboration are discussed. Our findings show the impact of having an ideal pickup point that would give students the ability to collect their parcels effortlessly and make the return of goods easier for students. As such, we extend extant studies on the implications for urban consolidation center theory and practice.</p></div>","PeriodicalId":100933,"journal":{"name":"Multimodal Transportation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772586322000326/pdfft?md5=34cc8d1e6058681e921991d4d73f0c7d&pid=1-s2.0-S2772586322000326-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72109936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Optimal consolidation center to improve urban freight transport: a case of student accommodation in a higher education institution 优化集散中心以改善城市货运:以高等院校学生住宿为例

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100032

O. T. Bukoye, Sathvik Gadiraju

引用次数: 2

Accessibility-based vulnerability analysis of multi-modal transportation networks with weibit choice models 基于可达性的多式联运网络脆弱性分析及权重选择模型

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100029

Yu Gu, A. Chen, S. Kitthamkesorn

引用次数: 13

Modeling and optimization for carsharing services: A literature review 拼车服务的建模与优化：文献综述

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100028

Ting Wu, Min Xu

{"title":"Modeling and optimization for carsharing services: A literature review","authors":"Ting Wu, Min Xu","doi":"10.1016/j.multra.2022.100028","DOIUrl":"https://doi.org/10.1016/j.multra.2022.100028","url":null,"abstract":"<div><p>This study conducts a holistic and in-depth review of the modeling and optimization problems arising from the carsharing service operations. The aims of this review are twofold. First, this review attempts to assist carsharing operators in (i) operating carsharing systems in a better way, and (ii) gaining a forward-looking understanding of the operation of the upcoming autonomous carsharing services. Second, this study seeks to provide the transportation and management science researchers with an overview of the literature on the optimization problems for the carsharing service operations and offer directions for future research. We classify the literature into three categories, i.e., strategic, tactical, and operational, according to the level of the decisions involved in the optimization problems. For each category, the optimization models and solution methods proposed in existing studies are surveyed. Finally, we conclude the literature review and discuss several possible future research directions for the carsharing service operation management.</p></div>","PeriodicalId":100933,"journal":{"name":"Multimodal Transportation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772586322000284/pdfft?md5=8c03fa97de7a91fbf17e8f6444775188&pid=1-s2.0-S2772586322000284-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72109937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Passenger car equivalent travel time of a truck 乘用车相当于一辆卡车的行驶时间

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100031

S. Pulugurtha, Ravina N. Jain

引用次数: 2

Urban multimodal traffic assignment 城市多式联运交通分配

Multimodal Transportation Pub Date : 2022-09-01 DOI: 10.1016/j.multra.2022.100027

Yu Jiang, O. A. Nielsen

引用次数: 8