Miguel Ángel Casquet , Alessandro Sciullo , Haoran Wang , Sonia Quiroga
{"title":"Electrification and modal shift in decarbonizing transportation: Impact evaluation in Piedmont region","authors":"Miguel Ángel Casquet , Alessandro Sciullo , Haoran Wang , Sonia Quiroga","doi":"10.1016/j.trd.2025.104757","DOIUrl":"10.1016/j.trd.2025.104757","url":null,"abstract":"<div><div>The adoption of environmentally friendly transportation is essential for sustainable development. Although numerous policies promote public bus transport, there has been insufficient analysis of their actual impact. This article presents a new framework that integrates demand, supply and electricity consumption using the A-S-I-F-E (Activity, Shift in modal share, change in Intensity, change in Fuel and Electricity generation). The study examines the impact of a transport policy on carbon emissions through a case study on the renovation and electrification of the bus fleet in the Piedmont Region. A pseudo-panel approach, based on household surveys from 2013 to 2022, is employed. Results indicate a significant increase in public bus transport following the application of the Synthetic Difference-in-Difference (SDiD) method. In terms of emissions, reductions in CO, NO<sub>X</sub>, CO<sub>2</sub>, PM<sub>2.5</sub> and CH<sub>4</sub> were observed, while emissions of NMVOCs and N<sub>2</sub>O increased. Consequently, combining demand- and supply-side should be promoted to reduce emissions effectively.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104757"},"PeriodicalIF":7.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexander Schmaus , Felix Creutzig , Nicolas Koch , Florian Nachtigall , Nora Molkenthin
{"title":"An urban shared pooled mobility system cuts distance travelled by over 50%","authors":"Alexander Schmaus , Felix Creutzig , Nicolas Koch , Florian Nachtigall , Nora Molkenthin","doi":"10.1016/j.trd.2025.104726","DOIUrl":"10.1016/j.trd.2025.104726","url":null,"abstract":"<div><div>Shared pooled mobility has the potential to reduce both the necessary number of private vehicles and the total driven distance. Here, we use logged car trips in Berlin as input for ride-pooling simulations to analyze the technical potential − assuming a complete switch from private to shared mobility. We measure the share of sharable trips, average vehicle occupancy, relative passenger travel time, and relative driven distance compared to individual driving. In the entire area of Berlin, we observe that a ride-pooling system with 26,500 vehicles could replace all 1,09 million private vehicles and their trips. The travel time is 55% higher, the average vehicle occupancy increases 2.1-fold, and the overall distance traveled is reduced by 61%. Our results demonstrate that system-wide urban efficiency and quality of life benefits − elimination of congestion and gain of public space for people − would come at higher time costs for commuters.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104726"},"PeriodicalIF":7.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Equity implications of emerging mobility services and public transit coopetition: A review","authors":"Abebe Dress Beza, Merkebe Getachew Demissie, Lina Kattan","doi":"10.1016/j.trd.2025.104751","DOIUrl":"10.1016/j.trd.2025.104751","url":null,"abstract":"<div><div>The rise of emerging mobility services (EMS), particularly ridehailing and micromobility, has transformed urban transportation and challenged the traditional public transit (PT) system. This has led to coopetition dynamics between EMS and PT, characterized by supplementary, complementary, and competitive interactions, which introduce complexity to discussions on equity, cost, and sustainability. The long-term impact will also depend on how EMS is integrated with existing PT and how cities manage these challenges. This study addresses these gaps by conducting a systematic literature review of EMS and PT coopetition dynamics, focusing on the equity implications of accessibility. The findings reveal that ridehailing primarily competes with PT while complementing it during disruptions and in areas with limited service; however, it disproportionately benefits affluent areas, exacerbating inequities. Conversely, micromobility supplements PT as first- and last-mile solutions while also competing in city centers. This study also offers topology and pathways from coopetition to equitable EMS and PT integration.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104751"},"PeriodicalIF":7.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vincenzo Cusati , Mario Di Stasio , Gabriele Lucci , Qinyin Zhang
{"title":"Evaluating hybrid-electric aircraft viability: The Ampaire Eco Caravan cost analysis","authors":"Vincenzo Cusati , Mario Di Stasio , Gabriele Lucci , Qinyin Zhang","doi":"10.1016/j.trd.2025.104759","DOIUrl":"10.1016/j.trd.2025.104759","url":null,"abstract":"<div><div>This study evaluates the direct operating costs (DOC) and economic feasibility of the Ampaire Eco Caravan, a hybrid-electric retrofit of the Cessna 208B Grand Caravan. A specialized cost methodology was developed, incorporating fuel and energy consumption, acquisition costs, maintenance, and operational expenses. Results show the Eco Caravan reduces fuel consumption by 50% due to its hybrid-electric propulsion system, which integrates a fuel-efficient piston engine and an electric motor during high-power phases. Additionally, maintenance costs decrease by 14%, and for a 100-nautical-mile mission, operational costs are 9% lower than the conventional model. However, higher acquisition costs and reduced block speed increase total DOC by 3%. Scenario analyses highlight the impact of fuel prices, electricity costs, retrofit expenses, and airport charges, emphasizing the critical role of policy incentives. These findings suggest hybrid-electric aircraft can be viable with technological advancements and regulatory support.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104759"},"PeriodicalIF":7.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Deborah Salon , Hanna L. Breetz , Hayley Wiers , David A. King
{"title":"Electric vehicles for all? Opportunities and challenges for large-scale adoption","authors":"Deborah Salon , Hanna L. Breetz , Hayley Wiers , David A. King","doi":"10.1016/j.trd.2025.104776","DOIUrl":"10.1016/j.trd.2025.104776","url":null,"abstract":"<div><div>Transportation electrification is critical for reducing reliance on petroleum and reducing carbon emissions. To meet these goals, EVs must become the norm. Thus far, however, electric vehicles (EVs) have been adopted mainly by high-income households. We investigate interest in EV adoption based on survey responses from a representative sample of 2,518 adults in the US Southwest. Four key findings emerge: (1) Attitudes, knowledge, and experience with EVs are the strongest predictors of EV interest, (2) Home charging access is strongly correlated with both pro-EV attitudes and interest in adoption, (3) Interest in EV adoption is only weakly related to income, and (4) Approximately 30 % of adults reported that they would never buy an EV. These findings suggest that increasing EV knowledge and improving access to home charging are critical to support large-scale adoption of EVs.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104776"},"PeriodicalIF":7.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wolfgang Habla , Kumai Kokash , Åsa Löfgren , Anna Straubinger , Andreas Ziegler
{"title":"Self-interest and support for climate-related transport policy measures in Germany and Sweden","authors":"Wolfgang Habla , Kumai Kokash , Åsa Löfgren , Anna Straubinger , Andreas Ziegler","doi":"10.1016/j.trd.2025.104707","DOIUrl":"10.1016/j.trd.2025.104707","url":null,"abstract":"<div><div>Based on survey data among citizens from Germany and Sweden, this paper examines the individual support for climate-related passenger transport policy measures. Our descriptive statistics reveal that pull policy measures are more strongly supported in both countries than push policy measures and bans. Our econometric analysis focuses on the relevance of economic self-interest, measured by indicators that are in line with the corresponding policy measure. Using multivariate ordered probit models, we show for both countries that citizens who are negatively affected by car-, air travel-, and bicycle-related policy measures are significantly more likely to disagree with them, while citizens who benefit from them are significantly more likely to support them. The corresponding estimated probability effects are substantial. For example, citizens who own or use a means of transport are estimated to be up to 21 percentage points less likely to support policy measures that negatively affect their ownership or use.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104707"},"PeriodicalIF":7.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Carbon savings in ride-pooling: A data-driven, route-based analysis from East Asia","authors":"Zhuonan Jiang , Tianqi Gu , Jiayan Zhang , Hyungchul Chung , Inhi Kim","doi":"10.1016/j.trd.2025.104764","DOIUrl":"10.1016/j.trd.2025.104764","url":null,"abstract":"<div><div>Ride-pooling characteristics, especially its routes’ characteristics have rarely been studied in the context of carbon emission reduction. This study proposes a route classification system and develops a refined version of the MOVES model, incorporating data from the Amap API. The model accounts for speed distribution, road hierarchy, and vehicle type to assess the impact of ride-pooling on carbon emissions in Suzhou, China. The results indicate that only 3.5 % of ride-hailing trips are pooled, mainly within the 5–15 km range, achieving a 22.54 % carbon reduction compared to non-pooled trips. The “overlapping route with all passengers” type achieves the highest reduction of 44.73 %. Compared to hybrid and electric vehicles, fuel-powered vehicles exhibit significantly higher emissions, with potential carbon savings of up to 8000 g per trip on longer routes when ride-pooling is implemented. Full ride-pooling adoption could cut Suzhou’s annual emissions by 30,000 tons, equivalent to a 19.14 % reduction in total ride-hailing emissions. These findings highlight the critical role of promoting ride-pooling and optimizing long-distance, high-overlap routes to maximize carbon reductions.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104764"},"PeriodicalIF":7.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Carbon emission reduction by forming liner alliances under maritime emission trading system","authors":"Yulong Sun , Jianfeng Zheng , Di Cui , Huayu Liu","doi":"10.1016/j.trd.2025.104771","DOIUrl":"10.1016/j.trd.2025.104771","url":null,"abstract":"<div><div>The maritime emission trading system (METS) is adopted to reduce ship CO2 emissions. This paper utilizes the forming of liner alliances under the METS to further reduce ship CO2 emissions. To investigate the effectiveness of forming liner alliances on ship CO2 emission reduction, we propose a liner ship operation planning problem for a liner alliance, which determines fleet deployment, slot co-chartering and emission permit trading. A multi-objective programming model is adopted to deal with the proposed problem. By considering three liner carriers, numerical results show that, i) the total ship CO2 emission reduction rate for these three liner carriers can be up to 13.5 %, by forming the liner alliance; ii) for any of these three liner carriers, the ship CO2 emission reduction rate can be up to 10 %∼15 %, by forming the liner alliance; iii) high fuel prices help liner alliances balance the trade-off between the operational cost and ship CO2 emissions.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104771"},"PeriodicalIF":7.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of railway grade separation: Aspects of real estate prices and gentrification","authors":"Po-Yen Yu , Yu-Ting Hsu","doi":"10.1016/j.trd.2025.104769","DOIUrl":"10.1016/j.trd.2025.104769","url":null,"abstract":"<div><div>The construction of railways has been proven to affect not only transportation but also land values and the potential for gentrification. However, debates persist due to limited studies and unclear benefits of projects related to the renewal of the transport infrastructure. This study examines the impact of railway grade separation on real estate prices and gentrification based on the cases in Taichung and Kaohsiung, Taiwan, using elevated and underground systems, respectively. Through difference-in-differences models and hierarchical clustering with Markov chains, the study analyzes gentrification indices and proximity to railway grade separation projects. Both cities show significant changes in real estate prices, but only Kaohsiung exhibits noticeable shifts in household income, indicating gentrification. The results provide insights for the government in enhanced evaluation of policy feasibility and future project implementation.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104769"},"PeriodicalIF":7.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yudan Kong , Xinyue Zhang , Junjin Wang , Guoqing Zhu
{"title":"Navigating towards sustainability: A comprehensive evaluation of port supply chain in China","authors":"Yudan Kong , Xinyue Zhang , Junjin Wang , Guoqing Zhu","doi":"10.1016/j.trd.2025.104770","DOIUrl":"10.1016/j.trd.2025.104770","url":null,"abstract":"<div><div>With the rapid expansion of international trade, maritime transportation has become a vital global link, with ports playing a critical role in supply chains. While these complex systems drive economic growth, they also present significant environmental and social challenges. To address these challenges, a comprehensive understanding of the current sustainability performance of port supply chains (PSCs) is essential. This paper introduces a customer-oriented sustainability assessment framework for PSCs, incorporating economic, environmental, and social dimensions. It integrates the Quality Function Deployment (QFD) method and Cross Hierarchical Data Envelopment Analysis (CH-DEA) model to evaluate 16 PSCs in China from 2017 to 2022, aiming to identify key deficiencies and provide a basis for targeted improvements. The results indicate that China’s PSCs show overall low levels of sustainable development. Economic deficiencies are widespread, while environmental and societal challenges, including CO<sub>2</sub> and SO<sub>2</sub> emissions, energy consumption, and accidents, remain difficult to address.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"144 ","pages":"Article 104770"},"PeriodicalIF":7.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}