Transport Policy最新文献

{"title":"Assessment of travel behavior dynamics among young demographic for different trip purposes of shared micro-mobility services","authors":"Christos Gkartzonikas ,&nbsp;Loukas Dimitriou","doi":"10.1016/j.tranpol.2026.104042","DOIUrl":"10.1016/j.tranpol.2026.104042","url":null,"abstract":"<div><div>Shared transportation services are becoming progressively prominent in cities and urban environments, where shared micro-mobility services such as shared bikes, e-bikes, and e-scooters increase their uptake, especially among young people. However, the majority of the previous studies evaluated the shared micro-mobility services distinctly, overlooking their potential interdependencies. Hence, understanding these interrelationships and examining how the trip frequency of shared micro-mobility services is associated for different trip purposes is essential for designing tailored policy interventions addressing specific user needs. What is more, previous research often treats young people as a homogeneous demographic group, thereby neglecting the heterogeneity in behaviors and preferences within this demographic group. Therefore, to address these gaps, this study evaluates a large sample of university-affiliated young individuals with the goal of uncovering heterogeneity in their adoption and use of shared micro-mobility services. Particularly, three latent class models are developed to classify distinct user groups based on different trip purposes – intra-university trips, commuting trips, and trips regardless of trip purpose – with the objective of contributing to the state-of-the-art by yielding heterogeneous user behaviors in an empirical setting, where people predominantly rely on their private vehicles. Lastly, the findings could highlight diverse user patterns and provide recommendations for policymakers and transportation service providers. These insights aim to support the heterogeneous travel needs of the younger demographic, while also fostering the broader adoption of shared micro-mobility services.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104042"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Benchmarking road transport sustainability: A composite index approach","authors":"Khaled Ben Abdallah ,&nbsp;Sabrine Khalifa","doi":"10.1016/j.tranpol.2026.104061","DOIUrl":"10.1016/j.tranpol.2026.104061","url":null,"abstract":"<div><div>Road transport plays a critical role in economic development but remains a major source of energy consumption, greenhouse gas emissions, and road-safety risks. Despite extensive research on sustainable transport, there is still no harmonized, road-specific, cross-country benchmarking tool that allows consistent comparison over multiple years. This study addresses this gap by developing the Composite Road Transport Sustainability Index (CRTSI), a transparent and reproducible framework designed to assess and compare road transport sustainability across 32 countries over the period 2011–2021. The CRTSI is constructed using six indicators reflecting the economic (GDP per capita, freight transport activity), environmental (Road energy consumption, road CO₂ emissions), and social (road traffic fatalities, motorization rate) dimensions of sustainability. This study applies a harmonized and coherent benchmarking configuration that integrates min–max normalization, objective weighting through Principal Component Analysis (PCA) applied to pooled panel data, and linear aggregation into a single composite index, enabling consistent cross-country comparison and multi-year monitoring of road transport sustainability. The robustness of the index is assessed using the Kaiser–Meyer–Olkin (KMO) measure, Bartlett's test of sphericity, and extensive sensitivity analyses based on alternative weighting schemes. The results of the cluster analysis for the year 2021, using the K-means clustering algorithm, reveal substantial cross-country heterogeneity and a clear three-tier sustainability landscape. Nordic countries emerge as frontrunners, driven by low-carbon energy structures, efficient road transport systems, and strong safety performance. In contrast, Germany, Poland, and Turkey rank lower due to energy-intensive freight activity, higher fossil fuel dependence, and elevated road fatality rates, despite otherwise advanced transport systems. Several Southern European countries, including Tunisia, display intermediate and improving trajectories. The CRTSI provides policymakers with a robust decision-support and benchmarking tool, demonstrating that leadership in road transport sustainability is driven primarily by policy choices rather than income levels alone.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104061"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing port resilience to typhoon disasters: A framework for recovery optimization and shipping network impact assessment","authors":"Tianni Wang ,&nbsp;Tina Ziting Xu ,&nbsp;Haochen Feng ,&nbsp;Zengjun Guo ,&nbsp;Mark Ching-Pong Poo ,&nbsp;Junqing Tang ,&nbsp;Adolf K.Y. Ng","doi":"10.1016/j.tranpol.2026.104029","DOIUrl":"10.1016/j.tranpol.2026.104029","url":null,"abstract":"<div><div>Extreme weather events driven by climate change increasingly disrupt port operations and maritime transport networks. This study investigates how post-disaster port recovery strategies influence economic losses and maritime network resilience under typhoon impacts. An integrated analytical framework is developed by combining a post-disaster port recovery model, an economic loss assessment model, and a network resilience evaluation approach. Two alternative maintenance personnel allocation schemes are proposed to optimize recovery time and resource utilization, and their effects on economic losses and network resilience are quantitatively compared. Using historical typhoon data affecting major Chinese ports since 1949, simulations are conducted to evaluate port disruption, recovery trajectories, and their impacts on shipping network performance. The results show that recovery efficiency is a key determinant of both economic loss reduction and maritime network resilience, with more efficient personnel allocation strategies leading to significantly shorter recovery durations and higher resilience levels. A case study of the Port of Shanghai validates the applicability of the proposed framework and identifies the optimal recovery strategy, while survey evidence reveals persistent gaps in container ports’ typhoon preparedness. The study contributes to the transportation resilience literature by offering a unified, data-driven framework that links recovery decisions, economic losses, and network-level resilience, and provides practical insights for port managers and policymakers to enhance disaster preparedness and post-disaster recovery planning.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104029"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Policy pathways for autonomous shuttle adoption: Insights from UK focus groups","authors":"Hisham Y. Makahleh ,&nbsp;Rachel Johnson ,&nbsp;Matthew Shelton ,&nbsp;Emma J.S. Ferranti ,&nbsp;Christopher D.F. Rogers","doi":"10.1016/j.tranpol.2026.104026","DOIUrl":"10.1016/j.tranpol.2026.104026","url":null,"abstract":"<div><div>Autonomous shuttles (AS) are positioned as environmentally sustainable first/last-mile mobility solutions, but deployments in the UK have so far been limited to short-term pilots. Although the Automated Vehicles Act 2024 has set out a regulatory framework for the future, continuing public trust, safety, accessibility, and governance issues constrain their longer-term take-up. This study explores such issues through four focus group discussions (n = 25) with local people living in the West Midlands, UK. Focus groups were held with users during a real-world trial at the National Exhibition Centre. A hybrid framework–thematic analysis was employed to explore both anticipated and emergent accounts. Key barriers included safety and reliability, low awareness and visibility, current lack of range and performance, issues with accessibility, and data privacy concerns. Enablers included AS being seen as good for the environment, a fun and novel experience, and the influence of peers. Acceptance of AS was also reported to be conditional on an operator being on board to reassure passengers. This study is among the first to link UK public perceptions during an operational AS trial with the emerging regulatory environment under the Automated Vehicles Act 2024. The real-world trial setting and inclusion of underrepresented users, including disabled participants, offer insights that extend beyond hypothetical acceptance studies. This is one of the earliest UK focus-group studies explicitly connecting lived trial experience to emerging AS policy pathways, and shows public accounts are less about the technical readiness of AS and more about their governance, integration, and service design. These insights are exploratory and reflect depth rather than statistical generalisation due to the qualitative design and sample size.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104026"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How does urban land use and transportation spatial configuration affect carbon exacerbation and mitigation?","authors":"Liyuan Zhao ,&nbsp;Mengzhao Yang ,&nbsp;Chudan Chen ,&nbsp;Liyang Huang ,&nbsp;Zhi-Chun Li","doi":"10.1016/j.tranpol.2026.104040","DOIUrl":"10.1016/j.tranpol.2026.104040","url":null,"abstract":"<div><div>Urban emissions remain a critical global challenge, yet the role of spatial planning in mitigation is poorly quantified. This study aims to clarify how urban form and transportation networks influence carbon emissions by introducing a new metric — the Bidirectional Carbon-Emission Discrepancy Coefficient (BCDC) — which captures the difference between ground-based and satellite-observed emissions to reveal spatial impacts. Focusing on the Wuhan Metropolitan Area, we combined a Bayesian-optimized LightGBM model with SHAP analysis to identify nonlinear effects and thresholds. We find that urban compactness improves emissions up to a threshold of 0.23, beyond which benefits diminish. A U-shaped relationship emerges between carbon efficiency and both ecological land share and average travel distance, indicating optimal ranges for mitigation. Spatial analysis shows distinct patterns: emission hotspots need targeted industrial relocation, while coldspots benefit most from expanding blue-green infrastructure (&gt;30 %) and decentralizing transport networks (15–20 % centrality reduction). These results provide actionable, location-specific strategies for urban decarbonization. By linking carbon data with spatial analytics, this framework advances climate-responsive urban planning, offering a scalable toolkit for tailored, evidence-based interventions that move beyond one-size-fits-all approaches.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104040"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Public perception of public transportation: Understanding dimensions through analysis of news articles","authors":"Huthaifa Al-Smadi ,&nbsp;Ursula Eicker","doi":"10.1016/j.tranpol.2026.104043","DOIUrl":"10.1016/j.tranpol.2026.104043","url":null,"abstract":"<div><div>Public transportation is a vital part of the national infrastructure, offering essential mobility and supporting environmental sustainability. However, public perception greatly influences the adoption and effectiveness of public transportation. Past studies on this topic have used surveys, gamification, and social media to gauge public perception. Surveys are often costly and capture only short-term opinions, while gamification can increase engagement but remains limited in reach, and social media provides real-time data but faces reliability and representativeness issues. In contrast, with recent advances in text mining, news coverage offers verified, longitudinal, and cost-effective insights into public perception.</div><div>This research takes a different approach by analyzing 80,000 news articles between 1980 and 2023 across the United States. It employs text mining techniques such as topic modeling and sentiment analysis. The identified topics were grouped into seven main clusters, and for each, the popularity and sentiment were analyzed. The study found that, based on news analysis, transportation planning, a cluster related to governmental and policy issues, accounts for 41% of coverage and has been the leading concern since 2005. Public safety was the dominant concern between 1980 and 2004, while public health became prominent after 2019 following the pandemic. This suggests that public perception is shaped more by policy-related issues than by service-related ones, which most current research focuses on. The study offers new insights into the dimensions of public transportation as reflected in news coverage, as well as a framework to help policymakers and decision-makers understand public opinion about public transportation, thereby enhancing public engagement in transportation management.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104043"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The asymmetric impact of sustainable aviation fuel adoption on airline industry","authors":"Fecri Karanki ,&nbsp;Chunyan Yu","doi":"10.1016/j.tranpol.2026.104059","DOIUrl":"10.1016/j.tranpol.2026.104059","url":null,"abstract":"<div><div>The decarbonization of aviation relies on the adoption of Sustainable Aviation Fuel (SAF), yet its economic impacts across airline business models remain poorly understood. This study develops an empirical framework to examine how SAF-induced fuel cost shocks propagate through airline costs, pricing, and passenger demand. Using a translog cost function and a stochastic-frontier markup model, we estimate firm-level costs, marginal costs, and markups for U.S. full-service airlines (FSAs) and low-cost carriers (LCCs). We simulate alternative SAF blending scenarios by allowing airfares to adjust through constant-markup pass-through, while passenger volumes respond endogenously according to business-model-specific demand elasticities. The results show that SAF adoption significantly increases costs for both airline types, but generates markedly larger passenger and revenue losses for LCCs. While FSAs are better able to buffer cost increases due to higher markups and less elastic demand, LCCs face substantial traffic contraction even under modest SAF blending. These findings highlight the importance of incorporating business model heterogeneity into SAF policy design to ensure an economically viable and equitable transition toward net-zero aviation.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104059"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing variable message sign design policy in Malaysia through a stated driver preference survey","authors":"Megat-Usamah Megat-Johari ,&nbsp;Nahvin Sangar ,&nbsp;Nusayba Megat-Johari ,&nbsp;Nischal Gupta ,&nbsp;Teik Hua Law","doi":"10.1016/j.tranpol.2026.104032","DOIUrl":"10.1016/j.tranpol.2026.104032","url":null,"abstract":"<div><div>Variable Message Signs (VMS) play a critical role in communicating real-time information to drivers. In Malaysia, while VMS design guidelines exist, they are largely adapted from international standards, written for English language displays, and do not account for legibility, driver feedback or field validation. Moreover, significant variability exists in VMS display characteristics among in-use VMS across Malaysia. To address these gaps, this study conducted a structured survey involving expressway drivers in Malaysia to evaluate preferences for key VMS display characteristics, including character height, character width, spacing between characters, word spacing, line spacing, and colour. Drivers were presented with multiple scaled-down VMS configurations on a screen and asked to indicate their preference for each feature. The findings revealed that the current VMS design practices in Malaysia do not fully align with driver preferences. Drivers generally preferred greater height and width of characters than current site averages or what is currently recommended in Malaysian guidelines. Drivers also favoured narrower spacing between characters and lines than current design guidelines. Recommendations were also developed for key design features such as word spacing and text colour, which are currently not explicitly addressed in existing Malaysian VMS guidelines. This study offers evidence-based recommendations to revise and strengthen Malaysian VMS guidelines, ensuring improved legibility, comprehension, and ultimately, safer driving conditions.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104032"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bus travel characteristics and needs of older people - A systematic review","authors":"Yiping Wu ,&nbsp;Qun Gao ,&nbsp;Jialing Liu ,&nbsp;Jian Rong ,&nbsp;Yi Wang","doi":"10.1016/j.tranpol.2026.104039","DOIUrl":"10.1016/j.tranpol.2026.104039","url":null,"abstract":"<div><h3>Background</h3><div>Against the backdrop of global aging and the prioritization of public transport policies, the development of age-friendly public transportation remains inadequate. Older people experience physical and mental declines due to aging, leading to special mobility needs. However, current public transport services do not align well with their needs. As a fixed operating and high-capacity option, bus travel has become older people's primary choice besides walking in most cities. Research on their bus travel characteristics helps understand their specific needs, but systematic reviews are limited.</div></div><div><h3>Objective</h3><div>This study systematically reviews literatures in the past ten years to explore older people's bus travel characteristics, influencing factors, and needs, aiming to provide a foundation for age-friendly transport policies.</div></div><div><h3>Methods</h3><div>A systematic literature review was conducted following PRISMA guidelines. Data were collected from Web of Science and Scopus (2015–2024), resulting in 75 included studies. Relevant international and national standards on age-friendly transportation were also reviewed.</div></div><div><h3>Results</h3><div>Studies on older people's bus travel characteristics mainly use bus IC card and survey data to analyze travel purpose, frequency, and spatio-temporal patterns, but micro-level mechanisms are less explored. Influencing factors include individual attributes (e.g., age, gender, health, income, family structure), built environment (e.g., conventional factors, inclusive design), natural environment (e.g., weather, topography), social environment (e.g., policies, humanistic care), and cost. Their needs focus on physiological, psychological, and destination accessibility aspects, requiring improvements in walking environments, riding conditions, and service levels.</div></div><div><h3>Conclusion</h3><div>Compared to other age groups, older people have higher demands for safety, convenience, and comfort due to physical limitations (e.g., reduced mobility, slower reactions, vulnerability to injuries). This study highlights the need for tailored interventions that address their diverse physical, psychological, and behavioral needs, and explores future trends in integrating smart, barrier-free, and personalized services into bus travel systems. It also emphasizes the importance of adapting transportation policies to differently social and cultural contexts, aiming to support the development of a fully age-friendly bus service chain and enhance the overall travel experience of older people.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104039"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146174437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relay transport network design for sustainable trucking industry considering carbon emissions and driver working conditions","authors":"Zeying Wen ,&nbsp;Xin Dou ,&nbsp;Xiaowen Fu ,&nbsp;Tao Feng","doi":"10.1016/j.tranpol.2026.104033","DOIUrl":"10.1016/j.tranpol.2026.104033","url":null,"abstract":"<div><div>Relay transport is an emerging collaborative approach that divides traditional long-haul shipments into multiple shorter segments, each handled by a different truck driver. By jointly completing shipments and enabling the shared use of transportation resources, this approach has the potential to alleviate operational inefficiencies, environmental pollution, and poor driver working conditions in the trucking industry. However, existing studies on relay transport network design primarily concentrate on the operational perspective of private companies. To address environmental and social issues in the trucking sector, this study proposes a bi-level programming model to develop a sustainable relay transport network that accounts for carbon reduction targets, carbon tax policies, driver work regulations, relay point capacity limits, and investment budgets. The upper-level government agency aims to minimize carbon emissions, driver overtime hours, driver overnight stays, and infrastructure construction costs by determining the number, location, and capacity of relay points. The lower-level trucking companies select freight transport routes based on the given network configuration, influenced by transport costs, cargo transit times, and carbon taxes. The model is solved using a genetic algorithm integrated with the method of successive averages. A case study in Japan identifies 22 relay points (14 small, 7 medium, 1 large). The optimized relay transport network offers substantial improvements compared to the traditional direct transport network, achieving reductions of 40.48 % in carbon emissions, 53.21 % in driver overtime hours, 70.38 % in driver overnight stays, 20.07 % in operational costs, and 5.13 % in total cargo transit times. Sensitivity analyses highlight the positive impact of appropriate relay point capacity and higher carbon tax on the network's sustainability performance. These findings offer valuable insights for government agencies to configure relay transport networks and support policymaking for sustainable freight transport planning.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"180 ","pages":"Article 104033"},"PeriodicalIF":6.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}