Article
Environmental Studies
Yogi Joseph, Govind Gopakumar
Summary: This paper focuses on the publicness of public transit and proposes a dynamic co-constituted notion of publicness that goes beyond static and spontaneous aspects. Through a mobile ethnographic approach that involves situated observation and interviewing, the study examines the entangling of micro- and macropolitics onboard public transit in the Indian metropolis of Bengaluru, presenting publicness as a contingent entity constituted through the process of transiting.
Article
Green & Sustainable Science & Technology
Agnieszka Gaschi-Uciecha
Summary: Ensuring sustainable transportation development is a priority in modern Europe, especially in cities. It is important to increase public transportation usage while minimizing social costs and negative environmental impacts. Planning and improving the public transportation system should be based on careful analysis to meet the changing needs of cities and their residents.
Article
Economics
Javier Arizcuren-Blasco, Rodrigo Martin-Garcia, Aurora Ruiz-Rua
Summary: This study assesses the economic viability of replacing diesel vehicles with electric ones in the public transport sector of mid-sized European cities. It proposes a methodology to improve public sector decision-making by analyzing the acquisition and operating costs of electric buses, accounting for both internal costs and externalities. The results show that investment in electric buses is not profitable without public subsidies, highlighting the importance of this type of analysis in the decision-making process for sustainable urban mobility development.
Article
Thermodynamics
A. Ajanovic, A. Glatt, R. Haas
Summary: The number of demonstration projects with fuel cell buses is increasing worldwide, and although the prices are still high, they are decreasing over time, making them a potential alternative to diesel buses. Interest in hydrogen is rising as a renewable energy source for fuel cell buses. From an environmental perspective, it is important to ensure that hydrogen is produced from renewables. However, high purchase prices remain the major barrier to a faster penetration of fuel cell buses.
Article
Construction & Building Technology
Jia Guo, Yusak Susilo, Constantinos Antoniou, Anna Pernestal
Summary: The study found that, overall, there is not much difference in passengers' choice behavior between automated buses and conventional buses, but individuals are more elastic towards changes in automated bus service levels. Additionally, poor weather conditions may lower the probability of choosing an automated bus over a conventional bus. Passengers traveling for work purposes, covering long distances, or traveling with companions are more likely to choose conventional buses over automated buses.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Ergonomics
Anna Anund, Sonja Forward, Anna Sjors Dahlman
Summary: This study aims to evaluate and understand the usage of seat belts in buses. Through observation, focus group discussions, and a web survey, it was found that seat belt usage can be improved, especially in regional and commercial bus traffic. The study also identified reasons for non-usage, such as discomfort and concerns about getting stuck. Recommendations were provided to increase seat belt usage.
ACCIDENT ANALYSIS AND PREVENTION
(2023)
Article
Environmental Sciences
Teresa Moreno, Rosa Maria Pinto, Albert Bosch, Natalia Moreno, Andres Alastuey, Maria Cruz Minguillon, Eduard Anfruns-Estrada, Susana Guix, Cristina Fuentes, Giorgio Buonanno, Luca Stabile, Lidia Morawska, Xavier Querol
Summary: A study on public transport in Barcelona during the summer of 2020 found traces of SARS-CoV-2 viral RNA in surface and air samples, with more viral remnants on bus surfaces compared to trains. Although signs of viral RNA were detected, they were considered unlikely to be infectious. Vigilant attention to ventilation systems and regular disinfection of vehicles are necessary to effectively eliminate viral traces, especially during peak COVID-19 periods.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Engineering, Civil
Amolika Sinha, Daniel Bassil, Sai Chand, Navreet Virdi, Vinayak Dixit
Summary: The study investigates the impact of connected automated buses in a mixed fleet with connected automated vehicles on the performance of urban transport systems. Results show that connected automated buses can significantly reduce travel time and standstill times, while also decreasing forced lane changes between vehicles and improving road safety.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Environmental Studies
Malin Aldenius, Caroline Mullen, Fredrik Pettersson-Lofstedt
Summary: This paper investigates the challenges and strategies for implementing electric buses in English and Swedish cities through a comparative approach. The comparison shows that the relationship and division of responsibility among stakeholders are central factors in overcoming the challenges.
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Pei Tong, Yadan Yan, Bo Li, Dongwei Wang, Xiaobo Qu
Summary: This study developed a speed planning model for connected battery electric buses (CBEBs) to minimize total battery capacity loss by optimizing bus speed and avoiding stopping delays. Results show that the developed method has significant advantages in reducing battery capacity loss.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Economics
Duy Q. Nguyen-Phuoc, Anh Thi Phuong Tran, Tiep Van Nguyen, Phuong Thi Le, Diep Ngoc Su
Summary: This study examines the impact of service quality and safety perceptions on loyalty among bus passengers, using a multidimensional approach and hierarchical modeling. The findings highlight the importance of perceived safety and security, service quality, and the moderating effect of gender on loyalty.
Article
Engineering, Civil
Jingxu Chen, Chengxin He, Xinlian Yu, Wendong Chen
Summary: The study suggests that imposing a surcharge on elderly passengers during the morning peak period could be an effective measure to avoid overcrowding on buses. A bilevel model is used to formulate the elderly pricing surcharge problem, and a trial-and-error solution method is developed to address this issue.
JOURNAL OF ADVANCED TRANSPORTATION
(2021)
Article
Energy & Fuels
Ivan Kernytskyy, Yevheniia Yakovenko, Orest Horbay, Maryana Ryviuk, Ruslan Humenyuk, Yaroslav Sholudko, Yurii Voichyshyn, Lukasz Mazur, Piotr Osinski, Konstantin Rusakov, Eugeniusz Koda
Summary: By conducting ergonomic design on bus seats, this study has developed a cost-effective and comfortable seat design that meets both comfort and safety requirements.
Article
Chemistry, Multidisciplinary
Darius Drungilas, Mindaugas Kurmis, Arturas Tadzijevas, Zydrunas Lukosius, Deivydas Sapalas, Valdas Jankunas, Arvydas Martinkenas, Rimantas Didziokas, Jurate Gruode
Summary: This paper presents a prototype of a disinfection system for public transport, specifically targeting the disinfection of surfaces contaminated with the SARS-CoV-2 virus on buses using 222 nm wavelength far-ultraviolet light (far-UVC). The study involved testing the technical system installed in a 12 m long M3 category urban bus, investigating optimal far-UVC light angles, and determining disinfection parameters for bus seat disinfection. The research identified the ideal positioning of a light source for effective disinfection and analyzed three disinfection scenarios, considering zone coverage, disinfection time, and energy demand. A subsystem employing real-time occupancy monitoring enhances the disinfection process in crowded areas of buses. An energy efficiency assessment model is proposed for optimizing energy consumption. Furthermore, the energy consumption analyses in different disinfection scenarios provide valuable insights for optimizing energy usage in public transport disinfection.
APPLIED SCIENCES-BASEL
(2023)
Article
Green & Sustainable Science & Technology
Yung-Tsan Jou, Charmine Sheena Saflor, Klint Allen Marinas, Michael Nayat Young
Summary: This study investigated the service quality of bus transits in Occidental Mindoro, Philippines during the COVID-19 pandemic, using Analytical Hierarchy Process (AHP) and SERVQUAL dimensions. A total of 200 individuals completed a 67-question online questionnaire. The findings showed that safety is the most significant factor for bus passengers, and service quality, responsiveness, reliability, empathy, and COVID-19 protocol significantly enhance service and customer satisfaction.
Article
Engineering, Civil
Daniel Horcher, Ramandeep Singh, Daniel J. Graham
Summary: Amid the pandemic, public transport operators face declining demand, leading to the need for effective demand management strategies such as advance booking and queueing control.
Article
Management
Daniel J. Graham, Ramandeep Singh
Summary: This paper proposes a model-based adjustment approach for comparative benchmarking, allowing the recovery of targeted metrics for specific aspects of intrinsic performance. The managerial relevance of the method is demonstrated through real-world applications.
IMA JOURNAL OF MANAGEMENT MATHEMATICS
(2022)
Article
Social Sciences, Mathematical Methods
Prateek Bansal, Daniel Horcher, Daniel J. Graham
Summary: This study proposes a dynamic choice model to estimate passenger valuation of service attributes using large-scale data, providing valuable insights for supply-side decisions of transit operators.
JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES A-STATISTICS IN SOCIETY
(2022)
Article
Economics
Prateek Bansal, Roselinde Kessels, Rico Krueger, Daniel J. Graham
Summary: The COVID-19 pandemic has changed people's travel behavior and created uncertainty in the demand for public transportation, particularly the London Underground. A study conducted a choice experiment among pre-pandemic users to understand their preferences during the pandemic. The analysis showed that travel time valuation increased when the Underground operated at technical capacity and that mandatory face masks were a significant driver for recovering demand. The study also revealed preference heterogeneity among users.
TRANSPORTATION RESEARCH PART A-POLICY AND PRACTICE
(2022)
Article
Physics, Multidisciplinary
Anupriya, Daniel J. Graham, Prateek Bansal, Daniel Hoercher, Richard Anderson
Summary: Congestion is a growing problem for metro systems, caused by passenger congestion and train-queuing, which leads to negative consequences and potential shifts in transportation modes. Alleviating congestion requires strategies such as regulating passenger inflow at bottleneck stations. The study proposes an empirical model to analyze station-level passenger congestion and develop fundamental diagrams (FDs) using large-scale smartcard and train movement data. The analysis demonstrates the existence of concave FDs at bottleneck stations, indicating a critical level of boarding-alightings above which congestion occurs.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Review
Transportation
Farah A. A. Awad, Daniel J. J. Graham, Laila AitBihiOuali, Ramandeep Singh
Summary: In recent years, there has been significant growth in the literature on performance measurement in public transit systems, focusing on financial and quality-of-service aspects. The shift towards considering quality-of-service as an important performance measure is evident, given its impact on ridership. However, there is a gap in the literature due to the segmentation of these two performance aspects and their interdependencies. This study provides a comprehensive review of methodologies and empirical findings on both aspects, highlighting the importance of linking cost efficiency and service quality.
Article
Economics
Zhenwei Gong, Fangni Zhang, Wei Liu, Daniel J. Graham
Summary: This paper investigates the effect of airport expansion on air traffic and its implications on airport congestion, airline competition, and social welfare under various administrative regimes, airline market structures, and passenger demand patterns. The analysis suggests that airport capacity expansion may lead to over-scheduled flights and increased congestion, especially in less competitive airline markets. Furthermore, the objective of the airport operator (i.e., profit-maximization, social welfare-maximization, or budget-constrained social welfare-maximization) affects the likelihood of congestion. Market power in airlines allows them to internalize a portion of airport congestion, while leader airlines with knowledge of follower responses manipulate airfare to maximize profits. Additionally, increasing airport charges always reduce aggregate traffic volume under different market structures and fixed airport capacity.
TRANSPORTATION RESEARCH PART B-METHODOLOGICAL
(2023)
Article
Multidisciplinary Sciences
Ramandeep Singh, Daniel Horcher, Daniel J. Graham
Summary: Decision making in a rapidly changing context necessitates a dynamic assessment of multiple factors. This paper presents a flexible data-driven simulation framework to increase safe mobility and economic interactions while reducing Covid-19 contagion. Using a case study of the London Underground, the model demonstrates significant performance gains in metro service provision during the pandemic.
SCIENTIFIC REPORTS
(2023)
Article
Economics
Daniel Horcher, Bruno De Borger, Daniel J. Graham
Summary: In this paper, the authors examine the impact of decentralised provision of loss-generating public services with benefit spillovers to other regions in a fiscal federation. Using public transport provision as an example, they demonstrate that local governments may benefit more when a higher-level government or a neighbouring region provides these services. The model highlights the importance of the tax exporting mechanism in determining the outcomes.
ECONOMICS OF TRANSPORTATION
(2023)
Article
Engineering, Environmental
Liang Ma, Daniel J. Graham, Marc E. J. Stettler
Summary: By analyzing activity changes during the first UK national lockdown, we found that road traffic significantly decreased and had varying impacts on air pollution in London. The changes in air pollution were correlated with spatial features, residents' income, and access to public transport services. Furthermore, existing inequalities in air pollution exposure were exacerbated during the lockdown.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Statistics & Probability
Yu Luo, Daniel J. Graham, Emma J. McCoy
Summary: Frequentist semiparametric theory has been widely used in the development of doubly robust causal estimation. In this paper, a fully semiparametric Bayesian framework is proposed for DR causal inference. The framework combines nonparametric Bayesian procedures with empirical likelihood via semiparametric linear regression, allowing for consistent parameter estimation even with correct specification of only one model.
JOURNAL OF STATISTICAL PLANNING AND INFERENCE
(2023)
Article
Economics
Prateek Anupriya, Prateek Bansal, Daniel J. Graham
Summary: Road network congestion is a major issue in urban areas worldwide, and building more roads to reduce congestion is controversial. This paper uses causal statistical modeling to quantify congestion technology in road networks in twenty-four cities globally, and finds that increasing network capacity is generally not an efficient solution to manage congestion.
TRANSPORTATION RESEARCH PART A-POLICY AND PRACTICE
(2023)
Article
Transportation
Farah A. Awad, Daniel J. Graham, Laila AitBihiOuali, Ramandeep Singh, Alexander Barron
Summary: This study compares urban rail transit (URT) systems using a data-driven approach, highlighting efficiency differences among operators and the complexity of defining service quality in the transit sector.
TRANSPORTMETRICA A-TRANSPORT SCIENCE
(2023)
Article
Engineering, Civil
Prithvi S. Acharya, Laila AitBihiOuali, H. Scott Matthews, Daniel J. Graham
Summary: This paper presents a data-driven analysis of the effects of safety inspection and maintenance programs (I/M programs) on road fatalities in the United States. The study uses the largest available data set covering all 50 states over a 44-year period and finds that states with I/M programs have lower roadway fatality rates.
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS
(2023)
Article
Economics
Daniel Hoercher, Daniel J. Graham
Summary: This paper discusses the desirability of running multiple public transport services (such as buses and trains) under public ownership along a transport corridor, when these modes are imperfect substitutes. With a focus on welfare-oriented public transport provision, the paper applies the theory of product differentiation and argues that modal variety can be beneficial for society if consumer preferences are widely spread and scale economies in service provision are limited. The argument is supported by theory and exemplified through an agent-based simulation model.
JOURNAL OF TRANSPORT ECONOMICS AND POLICY
(2022)