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Revenue management (RM) is a significant technique to improve revenue with limited resources. With the macro environment of dramatically increasing transit capacity and rapid railway transport development in China, it is necessary to involve the theory of RM into the operation and decision of railway passenger transport.

This paper proposes the theory and framework of generalized RM of railway passenger transport (RMRPT), and the thoughts and methods of the main techniques in RMRPT, involving demand forecasting, line planning, inventory control, pricing strategies and information systems, are all studied and elaborated. The involved methods and techniques provide a sequential process to help with the decision-making for each stage of RMRPT. The corresponding techniques are integrated into the information system to support practical businesses in railway passenger transport.

The combination of the whole techniques devotes to railway benefit improvement and transit resource utilization and has been applied into the practical operation and organization of railway passenger transport.

The development of RMRPT would provide theoretical and technical support for the improvement of service quality as well as railway benefits and efficiency.

Urban air mobility (UAM) development and deployment into future cities is gaining increasing and relevant interest in the past years. This study, a conceptual paper, aims to report the high-level description of the most relevant UAM application use cases (UCs) emerging from the research activities carried out in the ASSURED UAM project.

The UAM application UCs have been obtained from the ASSURED UAM project dedicated activities that have been carried out to, first, develop suitable operational concepts for UAM deployment in the next decades and, then, to further refine and design the most relevant UCs for UAM deployment in the next decades, leading to the public issue of dedicated overall document.

The ASSURED UAM UCs for UAM deployment in the next decades encompass both public (point-to-point, point-to-everywhere, direct medical transport of people) and private (direct last-mile delivery, advanced last-mile delivery, automatic personal aerial transportation) services applications, evolving in incremental way over time according to three considered time horizons (2025, 2030 and 2035), toward progressive integration into metropolitan transport system.

This paper provides final outline of the ASSURED UAM UCs, starting from the analysis of overall identified possible UAM applications, focusing on the description of the six main UCs considered as relevant for the application under the wider societal benefits point of view. The UCs are described in terms of expected operational environment, needed technological enablers and envisaged regulatory implications.

This paper aims to investigate the influence of air and rail transportation on pollution in Turkey from 1970 to 2020.

Fourier Autoregressive Distributive Lags (ADL) and Fourier Fractional ADL cointegration tests (Banerjee et al., 2017; Ilkay et al., 2021) are employed to analyze the relationship be-tween the variables. Cointegration tests that take into account soft transitions under structural changes are implemented. Structural change issues are crucial for this topic since the changes in countries’ environmental policies and transportation habits are shaped by the decisions taken in relation to environmental regulations. Finally, for robustness purposes, we tested the estimated equation with a completely different methodology. Thus, a Machine Learning (ML) analysis is conducted, through a Ridge Regression (RR).

The findings obtained by applying Fourier Autoregressive Distributive Lags (FADL) and Fourier Fractional ADL cointegration tests, which can control for structural changes, reveal the existence of a long-term relationship between the variables. In addition, FMOLS estimates emphasize that economic growth and air transport can lead to increased pollution in the long run, while rail transport reduces it. Moreover, the statistically significant trigonometric terms indicate the existence of a smooth structural change among the variables. Robustness checks are performed through a Machine Learning (ML) analysis, which roughly confirms the previous results.

To our knowledge, existing research in Turkey focuses mainly on road transport, while the impact of rail and air transport on pollution has not yet been investigated. As such, this study will be a significant addition to the academic literature.

The nexus of transport and tourism is critical to the 2021 Glasgow Declaration which sets out the net zero by 2050 goal for global tourism in the context of the Paris Agreement. Numerous small and medium-sized urban destinations (SMUDs) populated under one million are constrained by a limited capacity to manage visitor flows and increasing greenhouse gas (GHG) emissions. This paper aims to develop an analytical approach for urban practitioners, based on a case study in Taiwan, to identify the low-emission pathway and strategies for tourism passenger transport.

A GHG emissions assessment and scenario analysis were enabled by historical activity data from official sources and projected scenario data from the International Energy Agency. The scenarios were established based on the avoid-shift-improve framework for low-carbon transport.

To drive tourism passenger transport to a low-emission pathway compatible with the Paris Agreement goal, three low-carbon transport strategies, i.e. “Avoid,” “Shift” and “Improve,” shall be applied all together, with a focus on “improving” the efficiency of heavy-duty vehicles and rail transport. Meanwhile, alternative tourism and integrated transport policy packages could enhance demand-side management of visitors’ mobility, enabling the “avoid” and “shift” strategies.

Unlike most studies that have focused on large cities or small tourist areas, this paper addressed our knowledge gap regarding the low-emission pathway for tourism transport in numerous SMUDs compatible with a 1.5°C world. The proposed analytical approach can help policymakers assess effective strategies toward the targeted pathway.

This study uses big data analysis aimed at discovering city bus passenger ridership patterns. Hence, marketing managers can get sufficient insights to formulate effective business plans and make timely decisions about company operations.

This study uses a mixed-method analysis to analyze the results. First uses the RFM (recency, frequency, and monetary) model combined with a big data technique (K-means) to analyze bus passenger boarding behavior. In order to improve the validity and quality of the research, this study also conducted interviews with senior managers of the bus company from which the data was obtained.

The study identifies six distinct groups of passengers with different boarding behaviors, ranging from “general passengers” to “most valuable passengers”. General passengers constituted the largest group. As such, they should be the main target for municipal governments when promoting bus ridership as part of energy conservation and carbon-reduction activities. This group of passengers should be encouraged to take public transport vehicles more, instead of relying on personal vehicles. The fourth group identified included elderly passengers with hospitals as their destinations. Bus companies can cooperate with municipal government to provide morning “medical bus” services for the elderly. Interviews with bus company managers confirmed that the analytical results of this study correspond with the observations, experiences, and actual business operating plans of bus companies.

Only few studies have analyzed passengers' boarding behavior applying a mixed-method analysis.

The objective is to contribute to the development of strategies through the identification of sustainability practices. Thus, the research has a twofold objective: to unveil sustainability practices integrated into last-mile logistics activities by e-commerce retailers, analyze the interrelations among these practices and categorize them based on their significance for small Brazilian e-commerce retailers.

A literature mapping was conducted to identify sustainability practices in last-mile activities adopted by e-retailers, leading to the proposal of a meta-model. A total of 67 articles are part of the final sample. Subsequently, the study applied the Decision-Making Trial and Evaluation Laboratory (DEMATEL) multicriteria decision-making technique to structure the research problem through cause-and-effect analysis among practices, aiming to prioritize critical practices.

The results indicate a strong dependence on economic practices to enable sustainability in last-mile logistics. In the economic dimension of sustainability, operating costs and quality of services are effect variables and achieved the highest relation concerning the other practices.

The article provides theoretical contributions by addressing two complementary areas of knowledge: Stakeholder Theory and Sustainability, also aligning with Global Reporting Initiative (GRI) guidelines. In practical terms, it stands out for offering valuable insights into the implementation of sustainable strategies by identifying economic, environmental and social practices in last-mile logistics, particularly within the context of small businesses in the e-retail segment.

The results help e-retailers re-evaluate last-mile logistics processes from a sustainability perspective. This study aims to fill the knowledge gap in the current literature on adopting sustainable practices in small e-commerce retail firms.

Considering that one of the pillars of sustainability is a commitment to social development, this study contributes to understanding the view of small e-retailers on the independent goods delivery workers responsible for the delivery of goods.

The originality of this research lies in identifying economic, social and environmental sustainability practices adopted by e-retailers in last-mile logistics processes. Additionally, the study focuses on the small-scale e-commerce retail segment, an area that has been little explored in the Brazilian context. Lastly, the proposed meta-model contributes to addressing practices from the perspective of Stakeholder Theory and the Sustainability approach.

El objetivo es contribuir al desarrollo de estrategias mediante la identificación de prácticas sostenibles. Por lo tanto, la investigación tiene un doble objetivo: revelar las prácticas de sostenibilidad integradas en las actividades logísticas de última milla de minoristas de comercio electrónico, analizar las interrelaciones entre estas prácticas y categorizarlas según su importancia para los pequeños minoristas de comercio electrónico en Brasil.

Se llevó a cabo un mapeo de la literatura para identificar prácticas de sostenibilidad en las actividades de última milla adoptadas por minoristas en línea, lo que llevó a la propuesta de un metamodelo. Un total de 67 artículos forman parte de la muestra final. Posteriormente, el estudio aplicó la técnica de toma de decisiones multicriterio Decision-Making Trial and Evaluation Laboratory (DEMATEL) para estructurar el problema de investigación mediante análisis de causa y efecto entre las prácticas, con el objetivo de priorizar las prácticas críticas.

El resultado indica una fuerte dependencia de prácticas económicas para implementar la sostenibilidad en la logística de última milla. En la dimensión económica de la sostenibilidad, los costes operacionales y la calidad de los servicios son variables de efecto y presentan una fuerte correlación.

La originalidad de esta investigación radica en identificar prácticas de sostenibilidad económica, social y ambiental adoptadas por minoristas en línea en los procesos logísticos de última milla. Además, el estudio se centra en el segmento minorista de comercio electrónico a pequeña escala, un área poco explorada en el contexto brasileño. Por último, el metamodelo propuesto contribuye a abordar prácticas desde la perspectiva de la Teoría de los Stakeholders y el enfoque de Sostenibilidad.

El artículo proporciona contribuciones teóricas al abordar dos áreas complementarias de conocimiento: la Teoría de los Stakeholders y la Sostenibilidad, alineándose también con las directrices de la Iniciativa de Reporte Global (GRI). En términos prácticos, destaca al ofrecer ideas valiosas sobre la implementación de estrategias sostenibles al identificar prácticas económicas, ambientales y sociales en la logística de última milla, particularmente en el contexto de las pequeñas empresas en el segmento minorista en línea.

Los resultados ayudan a los minoristas electrónicos a reevaluar los procesos logísticos de última milla desde una perspectiva de sostenibilidad. Este estudio pretende contribuir el avance del conocimiento de la literatura actual sobre la adopción de prácticas sostenibles en pequeñas empresas de comercio electrónico.

Teniendo en cuenta que uno de los pilares de la sostenibilidad es el compromiso con el desarrollo social, este estudio contribuye a comprender la visión de los pequeños minoristas electrónicos sobre los trabajadores independientes encargados de la entrega de mercancías.

The purpose of this paper is to develop a framework for the assessment of service quality of bus fleet services based on the service quality influencing factors. The paper also tries to evolve a quantitative measure for fleet service quality in the form of a fleet service quality index.

A graph theoretical approach is employed in this paper for bus fleet service quality assessment. Modelling of fleet service quality factors and their interrelations with due attention towards their structure is achieved through graph theory. A directed graph (digraph) of the service quality is developed, where its nodes represent factors influencing the quality while its edges show the degree of interrelationships. A matrix, which is equivalent to the digraph, is established that will generate a service quality function that will result in the development of a fleet service quality index (FSQI).

Attaining customer satisfaction through assurance of quality is the cornerstone of the existence and survival of any business organization, and bus fleet services are no exception to this. Several influential factors are there for the bus fleet service quality. This research paper has identified factors such as fleet management practices, operational characteristics, safety and reliability features, travel comfort, bus maintenance and environmental concerns that affect fleet service quality. Every factor is composed of distinct sub-factors. Furthermore, these factors are linked with one another. A higher value of the fleet service quality index indicates the adequate performance of the bus fleet service organization.

The methodology is useful for not only evaluating but also for comparison of service quality of different fleet agencies or organizations. The perceptions would be useful to the fleet service managers to create procedures and arrangements for improving the service quality.

The paper identifies various service quality factors of the bus fleet and an evaluation scheme for those factors has been developed. Based on these, a framework had been developed for the assessment of the service quality of different fleet service providers.

This paper aims to define the efficiency achieved by urban transport companies in Spain concerning the resources they use, considering the type of management used for implementation, public-private, and size.

This study consisted of an analysis of the efficiency of 229 public-private urban transport operators during the period 2012–2021 using Data Envelopment Analysis, the Malmquist Index and inference estimators to determine productivity, efficiency change into Pure Technical Efficiency Change (PTECH), and scale efficiency change.

Based on the efficiency analysis, the authors concluded that of the 229 companies studied, more than 35 were inefficient in all analysed periods. Considering the sample used, direct management is considered significantly more efficient. It cannot be concluded that the size of these companies influences their efficiency, as the data show unequal development behaviours in the studied years.

This study provides arguments on whether there is a significant difference between the two types of management in the urban transport sector. It also includes firm size as a study variable, which has not been previously considered in other studies related to urban transport efficiency. Efficiency should be a crucial factor in determining funding allocation in this sector, as it encourages operators to optimize and improve their services.

Providing high-quality service for airline companies cannot be overstated, as it directly impacts their survival and competitiveness. Hence, there is an increasing need to measure loyalty in the air transport industry. Loyal customers are highly valued as they are less price-sensitive and require minimal communication efforts. Despite this, there is limited knowledge about the factors that influence a passenger’s level of loyalty towards an airline company. Therefore, understanding the precursors of loyalty is essential. This research investigates the serial mediation effect of consumer brand identification (CBI) and perceived value on the relationship between service quality and loyalty.

In this research, quality is related to loyalty through value and CBI. A conclusive research design was adopted to determine whether value and CBI have a serial mediating effect on the quality-loyalty link. The research framework includes a three-path mediation model.

Based on the analysis of 406 questionnaires, the study concludes that a serial mediation effect of CBI and perceived value on the quality-loyalty relationship exists. The research results indicate that CBI has a greater influence on improving customer loyalty than perceived value.

This study contributes to limited research on the serial mediating effect of value and CBI in the quality-loyalty relationship. It also provides empirical evidence on the determinants of loyalty as part of the Turkish aviation industry. This study highlights the significance of CBI as a critical factor for airlines to maintain their competitiveness in the market.

Electrification is a promising solution for decarbonising the road freight transport system, but it is challenging to understand its impact on the system. The purpose of this research is to provide a system-level understanding of how electrification impacts the road freight transport system. The goal is to develop a model that illustrates the system and its dynamics, emphasising the importance of understanding these dynamics in order to comprehend the effects of electrification.

The main methodological contribution of the study is the combination of the multi-layer model with system dynamics methodology. A mixed methods approach is used, including group model building, impact analysis, and literature analysis.

The study presents a conceptual multi-layer dynamic model, illustrating the complex causal relationships between variables in the different layers and how electrification impacts the system. It distinguishes between direct and induced impacts, along with potential policy interventions. Moreover, two causal loop diagrams (CLDs) provide practical insights: one explores factors influencing electric truck attractiveness, and the other illustrates the trade-off between battery size and fast charging infrastructure for electric trucks.

The study provides stakeholders, particularly policymakers, with a system-level understanding of the different impacts of electrification and their ripple effects. This understanding is crucial for making strategic decisions and steering the transition towards a sustainable road freight transport system.