{"title":"The impacts of high-speed rail expansion on short-haul air passenger transport – Evidence from German domestic and international traffic","authors":"Katrin Oesingmann, David Ennen","doi":"10.1016/j.cstp.2025.101549","DOIUrl":"10.1016/j.cstp.2025.101549","url":null,"abstract":"<div><div>This study presents an empirical assessment of the influence of (high-speed) long-distance train connections on air travel demand. Specifically, we examine the impact of changes in train travel speed on the number of air passengers within Germany and from Germany to major cities in neighboring countries. Our analysis uses a panel dataset of air passenger numbers on non-stop city-pair routes for the years 2002–2019. We also explore the effects of other variables, including average airfares, night train connections, the presence of low-cost carriers, and the market concentration of airlines (Herfindahl-Hirschman Index). The empirical approach is rooted in a structural gravity model, incorporating recent advancements in gravity modeling. Our results show that improved rail travel speed has a significant impact on the number of airline passengers in a given city pair. Specifically, a 1 % increase in train travel speed corresponds to an overall decrease in air passengers of 0.55 %. This effect is more pronounced for domestic routes, with an average decrease of 0.74 %, as well as for shorter distances and business class passengers. For international connections only, however, the effect is insignificant, but the provision of a night train connection has the potential to shift passenger traffic from air services to train services by between 10 % to over 30 %. Our estimated elasticities can be used to calculate the CO<sub>2</sub> emissions reduction potential for different modal shifts.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101549"},"PeriodicalIF":2.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Odbayar Erdenetsogt , Xiaowen Fu , Hanjun Wu , Kan Wai Hong Tsui
{"title":"Aviation industry growth in a landlocked developing country: The case of Mongolia","authors":"Odbayar Erdenetsogt , Xiaowen Fu , Hanjun Wu , Kan Wai Hong Tsui","doi":"10.1016/j.cstp.2025.101550","DOIUrl":"10.1016/j.cstp.2025.101550","url":null,"abstract":"<div><div>Improving air connectivity is crucial for landlocked developing countries (LLDCs) like Mongolia for the benefits of supporting trade flows, economic growth, and tourism. Analysing data from Mongolia’s international aviation markets (2014–2023), this study examines market dynamics shaping flight frequencies, airline competition, and ticket prices. Findings indicate that on routes where additional flights and seat capacity are introduced if air travel demands do not keep pace, airlines are forced to lower fares to fill seats and thereby suffer from a reduced yield. High-frequency routes, such as those to Beijing, Seoul, Istanbul, and Tokyo, experience intense competition and aggressive pricing, putting additional pressure on yield. In view of the overall inverse relationship between yield and flight frequency, airlines seem to prioritise profitability on certain routes by limiting flights to maintain airfare levels. Mongolia’s market has largely been dominated by full-service carriers (FSCs) with a limited presence of low-cost carriers (LCCs). To enhance air connectivity and industry growth, the Mongolian aviation industry may explore options such as (a) enhancing efficiency in the aviation sector to reduce operational costs; (b) facilitating strategic alliances or route-based cooperations with foreign airlines; (c) introducing more flexibility and freedom in airline operation, notably on seat capacity and route choices in the high and low seasons; and (d) allowing LCC growth on domestic and regional routes, including but not limited to low cost subsidiary of incumbent full service airline. The Mongolian government should also promote national and foreign network carrier services linking major international hub airports with Mongolia’s main airport in conjunction with efforts to boost international tourism and e-commerce. Practical insights for enhancing Mongolia’s aviation sector are discussed.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101550"},"PeriodicalIF":2.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiangjing Dai , Yanzai Wang , Heng Wang , Yang Wang , Chuan Guo , Chenyue Deng , Zhenyu Ran
{"title":"Quantifying COVID-19-induced disruptions and recovery benchmarks in China’s aviation passenger mobility (2020–2025)","authors":"Jiangjing Dai , Yanzai Wang , Heng Wang , Yang Wang , Chuan Guo , Chenyue Deng , Zhenyu Ran","doi":"10.1016/j.cstp.2025.101547","DOIUrl":"10.1016/j.cstp.2025.101547","url":null,"abstract":"<div><div>The COVID-19 pandemic exerted profound impacts on various facets of global society. The lockdown measures implemented to curb the spread of the virus significantly disrupted the upward trend of civil aviation transportation. This study assesses the pandemic’s impact on China’s air passenger traffic (APT) using three forecasting models to construct counterfactual scenarios. By comparing predicted and actual APT (ΔAPT), we quantify the pandemic—induced losses and analyze their temporal patterns. The initial outbreak caused a sharp drop in APT, with the largest annual loss occurring in 2022. Following the relaxation of control measures in December 2022, APT began to rebound and resumed seasonal patterns. However, full recovery is projected for mid-2025 monthly and early 2026 on a quarterly basis. The integration of three forecasting models improved prediction accuracy and revealed a 12-day lag effect between COVID-19 case trends and changes in APT. This research contributes to understanding the dynamic relationship between public health events and transportation systems. Based on the findings, two policy recommendations are proposed: developing a flexible system that connects real-time epidemic data with aviation responses; improving decision-making by using detailed passenger and regional demand data. These measures can improve the resilience and adaptability of the aviation sector in response to future crises.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101547"},"PeriodicalIF":2.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Naiara Tomazelli Giuriatto , Giuliano Messias da Silva , Marcius Johaz Rodrigues e Silva , Silas Adolfo Potin , Noéle Bissoli Perini de Souza , Thiago Padovani Xavier
{"title":"Quality of chartered transport service: The case of an oil and gas company","authors":"Naiara Tomazelli Giuriatto , Giuliano Messias da Silva , Marcius Johaz Rodrigues e Silva , Silas Adolfo Potin , Noéle Bissoli Perini de Souza , Thiago Padovani Xavier","doi":"10.1016/j.cstp.2025.101548","DOIUrl":"10.1016/j.cstp.2025.101548","url":null,"abstract":"<div><div>The increasing demand for efficient transportation systems has led companies to consider chartered transport services as a sustainable solution to urban mobility challenges, including traffic congestion, greenhouse gas (GHG) emissions, and employee satisfaction. Despite its benefits, this service is underexplored in Brazil, especially in sectors such as oil and gas, which impact the entire transportation services industry. Most studies on transport quality focus solely on user perceptions, neglecting other stakeholders, such as drivers, the operations team, and the contracting company. This study assesses the quality of chartered transportation services in a Brazilian company, using an adapted SERVQUAL model and data from multiple stakeholders (n = 561). The research employed a case study approach through structured questionnaires. The investigation used gap analysis (GAP) and quadrant analysis to assess perceptions and expectations regarding various service attributes. Critical gaps for targeted improvements were identified, such as seat comfort, noise levels, travel time, and restroom cleanliness. Vehicle identification, on the other hand, was consistently rated positively. Quadrant analysis revealed that most attributes were considered strengths, although communication channels and itinerary flexibility require prioritization. The study emphasizes the importance of addressing specific gaps for each stakeholder to improve service performance. Regular evaluations and tailored strategies are recommended to ensure continuous improvement. This research contributes to the underexplored field of chartered transport service quality, offering a model applicable to other sectors.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101548"},"PeriodicalIF":2.4,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giulia Oeschger , Brian Caulfield , Páraic Carroll
{"title":"Measuring the integration of micromobility and public transport – the development of a new network analysis tool","authors":"Giulia Oeschger , Brian Caulfield , Páraic Carroll","doi":"10.1016/j.cstp.2025.101545","DOIUrl":"10.1016/j.cstp.2025.101545","url":null,"abstract":"<div><div>The integration of micromobility and public transport is an increasingly relevant and desirable strategy to promote more sustainable alternatives to private car travel. For it to be successful, however, adequate infrastructure to facilitate intermodal trips needs to be provided, at stops and in the catchment areas surrounding them. In this study, a methodology is proposed to holistically assess the quality and availability of such infrastructure using Open Data. The proposed methodology combines a network analysis of the catchment areas with an assessment of the public transport stops. The assessment results in an index that objectively quantifies the quality and availability of infrastructure that is necessary for a successful integration of micromobility and public transport. The methodology has been applied to the case study of the light rail network in Dublin, Ireland, showing that the index is a straightforward combination of datasets which allows to compare public transport stops in terms of their suitability for the integrated use of micromobility and public transport. Overall, the methodology is a valuable assessment tool to objectively determine the integration of micromobility and public transport, applicable in any geographical context – for which the required open datasets are available – and to inform decision-making processes relating to improving the accessibility of public transport services.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101545"},"PeriodicalIF":2.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of the anchorage area selection by using association rule mining","authors":"Burak Kundakci , Selcuk Nas","doi":"10.1016/j.cstp.2025.101544","DOIUrl":"10.1016/j.cstp.2025.101544","url":null,"abstract":"<div><div>Anchorage area selection is conducting by ship masters by considering various factors. Some of these factors are distance from anchorage area to berth, water depth, density in the anchorage area, meteorological condition, Vessel Traffic Service (VTS) suggestion etc. Within this context, to analyze the anchorage area selection behavior under different conditions, Automatic Identification System (AIS) data for the year of 2023–2024 and wind data are used.</div><div>The research is conducted in the Nemrut Bay and Çandarlı Bay, on the western side of the Türkiye, where several industrial ports and terminals are located. There are eight anchorage areas in the area and these eight-anchorage areas are used by vessels carrying dangerous cargo, vessels carrying non-dangerous cargo and the vessels that will approach the breaking yards. The aim of this study is to reveal the hidden and meaningful relationships between anchorage area selection, vessel related and weather-related factors by using association rule mining (ARM) and Cramer’s V analysis. While the ARM results show the strong and frequent association between variables, Cramer’s V quantifies the strength of association between these categorical variables. These two approaches highlight the anchorage area selection patterns of ship masters and explain relationships among variables.</div><div>Studies about anchorage areas are mainly focused on the anchorage location selection. Novelty of this study is to show the anchorage area selection patterns of ship masters under various conditions with ARM and Cramer’s V analysis. Results of this study show the relationships among variables during the anchorage area selection process.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101544"},"PeriodicalIF":2.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Contested power structures in global logistics networks: Insights from the 2023 truck driver protests in Germany","authors":"Veronique Helwing-Hentschel","doi":"10.1016/j.cstp.2025.101543","DOIUrl":"10.1016/j.cstp.2025.101543","url":null,"abstract":"<div><div>The concept of labour agency has so far lacked an approach that comprehensively integrates both the structural conditions and outcomes of labour actions – for example, institutional frameworks in global supply chains, which are currently undergoing rapid change. By combining the concept of labour agency with the global production networks (GPN) approach and using the case of the 2023 truck driver protests in Gräfenhausen, Germany, the paper addresses the existing gap and examines the extent to which labour actions can alter power structures within global logistics networks. The study draws on a qualitative approach, in which primarily interviews have been conducted with various actors involved in logistics networks. The findings show that the protests in Gräfenhausen contested existing power structures in global production networks through the utilisation of both collective as well as institutional power. However, they neither resulted in the formation of new nor a mere maintenance of existing structures. Instead, the results indicate that labour actions in the case of Gräfenhausen led to a <em>recalibration</em>, specifically a behavioural adjustment among actors within global logistics networks. The study demonstrates that labour actions can yield multi-layered and even contradictory effects on their broader structural context. Thus, the paper argues for a <em>nuanced understanding of labour agency outcomes</em> and structure-agency dynamics in global production networks.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101543"},"PeriodicalIF":2.4,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analyzing behavioral factors affecting Indian motorcyclists willingness to pay for safety","authors":"Anand Kumar Saurav , Ranja Bandyopadhyaya , Hillol Chakravarty , Vijaya Bandyopadhyaya","doi":"10.1016/j.cstp.2025.101542","DOIUrl":"10.1016/j.cstp.2025.101542","url":null,"abstract":"<div><div>This work analyses motorcycle riders’ willingness to pay (WTP) for fatality risk reduction (RR), for 20% 40%, 50%, 60% and 80% RR levels, considering hypothetical improved helmets using payment card. Value of Statistical Life (VSL), which indicates the WTP value for 1% risk reduction, is estimated considering linear variation of average WTP for different RR levels. The work also analyses how RR level and individual’s socio-demographic profile influence WTP for safety using two-level Tobit model. Structural equation model was used to analyze how socio-demographic profile affect individual’s personal and social beliefs towards helmet use and safety, how these beliefs affect attitude towards helmet use (Theory of Planned Behavior constructs) and how these attitudes in turn affect the WTP. Data for this work was collected through face-to-face interviews of 541 motorcyclists in Patna, India.</div><div>The VSL for Indian motorcycle rider safety was estimated as 1,170,000 USD, which is about 52 times the per capita income, which is in the range of VSL observed by other researchers for road safety for low- and middle-income countries. It was observed that greater RR potential of helmet improved WTP significantly. More people were willing to pay less than average for any RR level but average WTP variability was less for higher RR levels. VSL obtained was comparable to that obtained in similar Asian countries. Also, socio-demographic characteristics gender, education, income, marital status and household size significantly influenced the beliefs; beliefs influenced attitudes, and attitudes influenced WTP.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101542"},"PeriodicalIF":2.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Is exclusive motorcycle lane an effective strategy to enhance the operational and safety performance of rural highways?","authors":"Harish Kumar Saini, Ankit Kathuria","doi":"10.1016/j.cstp.2025.101541","DOIUrl":"10.1016/j.cstp.2025.101541","url":null,"abstract":"<div><div>Previous research has highlighted that segregating motorcyclists from the main traffic stream by providing dedicated lanes reduces the likelihood of crashes. The study evaluates the operational and safety performance of an exclusive motorcycle lane (EMCL) using link performance functions and traffic conflict techniques. However, EMCLs are not currently operational in India; thus, temporary implementations of EMCLs were conducted on rural highways to collect field data. A simulation model was developed, calibrated, and validated for EMCLs, mixed vehicle lanes, and scenarios without EMCLs to augment the data. Link performance functions were developed and optimised to determine the optimum volume-capacity (V-C) ratio. From the study, lower optimum V-C ratios were observed on roads with EMCLs (0.588 and 0.598) compared to those without EMCLs (0.852 and 0.698), indicating an increase in the level of service. Additionally, a safety analysis of EMCLs was carried out to assess conflict severity using surrogate safety measures (SSMs). The interactions between different vehicles were investigated and categorised into critical, mild, and safe based on SSM. The results indicate that implementing EMCLs improves the safety of motorcyclists and other road users by reducing critical interactions by 42%. Overall, the research showed that the motorcycle segregation strategy enhances rural highways’ operational and safety performance. The key findings of this study will provide valuable insights for transport planners, researchers, policymakers, and government agencies.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101541"},"PeriodicalIF":2.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Consumer insights on EV policy towards accelerated adoption – Canberra case study","authors":"Yuan Peng , Reza Fazeli , Wentao Ye , Xuemei Bai","doi":"10.1016/j.cstp.2025.101540","DOIUrl":"10.1016/j.cstp.2025.101540","url":null,"abstract":"<div><div>This study explores consumer perspectives on electric vehicle (EV) adoption in Canberra, Australia—a city in the early stages of EV promotion. Drawing on 524 valid survey responses and a mixed-methods approach, we examine key barriers, policy needs, and the influence of consumer knowledge on adoption intent. Results indicate that EV knowledge and prior driving experience significantly enhance purchase interest. While respondents exhibit relatively strong awareness of environmental benefits and local incentives, they are less informed about operational cost savings and lifecycle emissions. A supplementary dealer survey reveals a supply-side information lag, highlighting the need for improved communication channels between policymakers, dealers, and consumers. Consumers’ primary concerns relate to EV performance and cost-effectiveness, suggesting that recent technological progress has not yet translated into widespread consumer confidence. Qualitative responses further reveal diverse policy expectations spanning social, technical, and economic domains. The findings emphasize the necessity of a comprehensive local policy framework to facilitate EV uptake in emerging markets. Such a framework should address evolving challenges, including battery recycling, integration with home energy systems, and the development of supporting services. While local governments have limited influence over vehicle pricing and national technological standards, they can play a critical role in closing information gaps through targeted educational programs and alleviating infrastructure-related barriers. This research contributes to the understanding of localized EV policy design and provides insights for other cities seeking to initiate or strengthen their EV transition strategies.</div></div>","PeriodicalId":46989,"journal":{"name":"Case Studies on Transport Policy","volume":"21 ","pages":"Article 101540"},"PeriodicalIF":2.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}