Article
Chemistry, Multidisciplinary
Alberto Dianin, Michael Gidam, Georg Hauger
Summary: This study introduces a new indicator called Space-Time Transport Performance (STTP) to analyze the specific role of the transport system in individual accessibility differences. Compared with the commonly used Space-Time Accessibility measures (STAs), STTP provides a more accurate measurement of individual accessibility differences, which is particularly important for transport policy makers.
APPLIED SCIENCES-BASEL
(2022)
Article
Economics
Felix Johan Pot, Bert van Wee, Taede Tillema
Summary: This paper explains the concept of accessibility and the mismatches with perceived accessibility, proposing the establishment of a conceptual model to understand the mechanisms behind these discrepancies. It points out that inaccuracies in awareness and failure to consider subjective evaluations can lead to mismatches between calculated indicators and perceptions of accessibility.
JOURNAL OF TRANSPORT GEOGRAPHY
(2021)
Review
Transportation
Giovanni Vecchio, Karel Martens
Summary: This paper examines the application of the Capability Approach in transportation planning, emphasizing the importance of accessibility and proposing a comprehensive evaluative approach to enhance individuals' freedom to pursue meaningful lives in contemporary societies.
Article
Economics
Ho-Yin Chan, Anthony Chen, Guoyuan Li, Xiangdong Xu, William Lam
Summary: The Mass Transit Railway is expanding in phases in Hong Kong, with different impacts on accessibility and resilience. Each expansion stage will gradually extend benefits to more areas such as reduced travel times and increased route diversity, but certain parts of the network may become more vulnerable, requiring additional resources for protection.
JOURNAL OF TRANSPORT GEOGRAPHY
(2021)
Article
Economics
Lok Shun Chan
Summary: This paper analyzes and discusses the strategy and policy for successful transition from fossil fuel dominant transportation to an electrified mass transit railway system, taking Hong Kong as a study case. The Hong Kong Mass Transit Railway (MTR) system has 98 stations along 10 domestic rail lines of 266.3 km route length, with an average daily passenger number of 4.189 million in this highly dense city with a population of 7.413 million. The Hong Kong MTR system shares 48% of the franchised transport boarding with the expense of only 4.9% of the annual energy consumption in the entire transport sector. In addition to the renowned business model: Rail plus Property model which has been quoted in many literatures, this study analyzes and discusses the design, operation, management, feeder bus service, and the government's policy and strategies on fossil fuel driven vehicle control. Moreover, suggestion on enhancing the existing contingency plan of the MTR operation is proposed.
Article
Economics
Felix Johan Pot, Sierdjan Koster, Taede Tillema
Summary: This paper evaluates the role of residential self-selection in the spatial distribution of perceived accessibility in the Netherlands. It demonstrates that perceived accessibility is less variable than spatial accessibility, and there are diminishing returns to spatial accessibility. Preference-based residential self-selection further mitigates spatial accessibility differences. However, rural areas still have lower perceived accessibility due to limited residential freedom and the non-linear benefits of spatial accessibility. Accessibility-based transport planning requires a shift away from alleviating car congestion and a geographical shift in favor of rural areas.
JOURNAL OF TRANSPORT GEOGRAPHY
(2023)
Article
Engineering, Civil
Giovanni Vecchio, Ignacio Tiznado-Aitken, Bryan Castillo, Stefan Steiniger
Summary: This paper examines the fairness of different public transport policy scenarios for a specific population group, taking into account the complexity of mobility-related inequalities and the policy implications of transport justice. The study assesses the potential accessibility to public transport in Santiago de Chile under different policy scenarios, with a focus on older people. The results show that subsidized fares for public transport services benefit older people with lower incomes in terms of accessibility, while the expansion of the Metro network mainly benefits middle- and high-income older people.
Article
Economics
Damiaan Persyn, Jorge Diaz-Lanchas, Javier Barbero
Summary: Transport costs play a crucial role in spatial models, but accurate estimates at lower levels of spatial aggregation are lacking. This paper improves on previous methods by using large random samples of centroids to calculate transport costs between and within regions. The study finds that fuel price increases have a significant impact on transport costs in Eastern Europe, and evaluates the effectiveness of transport infrastructure investment in the European Cohesion Policy program. The findings suggest decreasing returns to further transport infrastructure in targeted regions in Southern Europe.
Article
Green & Sustainable Science & Technology
Kristijan Solina, Borna Abramovic
Summary: Network activities are crucial to the economy, particularly services of general economic interest. In Europe, the opening of monopolistic service markets led to the adaptation of state-owned monopolies. The liberalization of the railway freight transport market brought new opportunities and challenges, resulting in the separation of railway functions. Based on our analysis, understanding the broader picture of state interventions and infrastructure manager independence is essential in preventing market marginalisation.
Article
Engineering, Electrical & Electronic
David Ramsey, Tony Letrouve, Alain Bouscayrol, Philippe Delarue
Summary: Conventional dc railway systems are usually supplied by nonreversible traction power substations, resulting in regenerative braking energy not being able to be sent back to the electric power grid. By adding energy recovery devices, the simulation results show a reduction of up to 30% of the total supplied energy, indicating great potential for improving energy efficiency.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2021)
Article
Urban Studies
Krystyna Kurowska, Daria Adamska-Kmiec, Cezary Kowalczyk, Przemyslaw Len
Summary: The main objective of the study was to determine the communication value of urban space by defining the concept of public transport communication value and developing a method to determine it. The results of the study indicated that the proposed method supports the identification of areas with high communication value and areas where public transport needs improvement.
Article
Economics
Saakshi Joshi, Ajay Bailey, Anindita Datta
Summary: Urban mobility infrastructures play a crucial role in connecting city residents and providing opportunities, however, barriers to transport accessibility exist in Delhi due to factors such as social and spatial position, transport policies, and uneven distribution of services caused by urban sprawls. Emphasizing the importance of inclusive discussions and interventions to improve accessibility by highlighting users and pushing for meaningful change in transport planning is essential in the face of Delhi's continuous growth and migration.
Article
Green & Sustainable Science & Technology
Adrian Gill, Piotr Smoczynski
Summary: One basic strategy for responding to unacceptable risks is to introduce new elements as a safety system, reducing specific hazards. However, excessive development of the safety system may lead to costly and complex issues. By utilizing an optimization method based on risk analysis results, it is possible to select the most suitable configuration of safety system components.
Article
Economics
Felix Johan Pot, Sierdjan Koster, Taede Tillema
Summary: The spatial concentration of services and facilities in rural areas poses challenges to ensuring sufficient social and economic opportunities. Evaluations of accessibility based on spatial data may overlook individual differences in needs and perceptions. A study in the Netherlands found that perceived accessibility in rural areas does not strongly correlate with spatial accessibility, but is influenced by individual factors. Car mobility is a significant contributor to perceived accessibility, while social disadvantages have a stronger association with the lowest levels of perceived accessibility. Incorporating individual characteristics into spatial accessibility measurements can bridge the gap with perceived accessibility and enhance planning practices.
Article
Computer Science, Information Systems
Cristian Poliziani, Gary Hsueh, David Czerwinski, Tom Wenzel, Zachary Needell, Haitam Laarabi, Joerg Schweizer, Federico Rupi
Summary: We simulate the integration of on-demand shuttles service with existing fixed-route public transportation service in a large-scale transport digital twin of San Francisco Bay Area. The simulation results show that on-demand automated shuttles can effectively increase overall transit ridership and replace rideshare and walking trips. This service has the potential to reduce vehicle miles traveled, increase transit accessibility, and save energy.
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
(2023)
Article
Environmental Studies
Aris Christodoulou, Panayotis Christidis, Berny Bisselink
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
(2020)
Article
Environmental Sciences
Panayotis Christidis, Aris Christodoulou
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Computer Science, Information Systems
Philippe Y. R. Sohouenou, Panayotis Christidis, Aris Christodoulou, Luis A. C. Neves, Davide Lo Presti
INTERNATIONAL JOURNAL OF CRITICAL INFRASTRUCTURE PROTECTION
(2020)
Article
Multidisciplinary Sciences
Aris Christodoulou, Lewis Dijkstra, Panayotis Christidis, Paolo Bolsi, Hugo Poelman
Article
Computer Science, Interdisciplinary Applications
B. Degraeuwe, E. Pisoni, P. Christidis, A. Christodoulou, P. Thunis
Summary: SHERPA-City is a web application developed by the Joint Research Centre to assess the potential of traffic measures to reduce NO2 air pollution in cities. It allows users to quickly screen possible measures and substitute default data with local data for better accuracy. Decisions should ideally be based on full-scale modeling studies with local knowledge.
ENVIRONMENTAL MODELLING & SOFTWARE
(2021)
Article
Green & Sustainable Science & Technology
Juan Ramon Lopez Soler, Panayotis Christidis, Jose Manuel Vassallo
Summary: Teleworking and online shopping have become common during the COVID-19 pandemic and are expected to continue in the future, potentially leading to significant changes in mobility patterns and transport demand. However, the extent of their adoption varies and the impact on different population segments is diverse.
Article
Green & Sustainable Science & Technology
Panayotis Christidis, Aris Christodoulou, Elena Navajas-Cawood, Biagio Ciuffo
Summary: Expectations for post-COVID recovery of transport activity point towards a gradual return to normality, but the shock to society and economy has caused behavioral changes that may influence the evolution of the transport sector, requiring measures to adapt to new transport demands.
Article
Green & Sustainable Science & Technology
Maria Vega-Gonzalo, Panayotis Christidis
Summary: The increasing use of new data sources and machine learning models in transport modelling raises concerns about potentially unfair model-based decisions that rely on socio-economic and demographic data. This study demonstrates the impact of algorithmic bias and explores best practices for addressing it using different supervised learning models. By comparing different types of data and debiasing techniques, the study provides insights into achieving fairer classification models.
Article
Economics
Panayotis Christidis, Elena Navajas Cawood, Davide Fiorello
Summary: This article examines the changes in transport and mobility patterns caused by the Covid-19 pandemic and the potential impact on public transport policy and urban planning. Through an extensive survey conducted in 20 cities across 11 European countries, with a total of 10,000 respondents, various information was collected and a classification model was applied to explain the changes in mode choice. The findings suggest that the changes in mobility patterns are influenced by mobility restrictions, new lifestyle choices, and individual preferences, and urban transport policy faces challenges related to increased car usage, avoidance of public transport, and uncertainties in transport innovation.
Article
Multidisciplinary Sciences
Elena Navajas-Cawood, Davide Fiorello, Mari Angeles Martinez, Juan Vicente Castellanos Quintana, Gabriella Scarcella, Panayotis Christidis
Summary: This dataset contains the comprehensive results of a survey conducted in the second trimester of 2021, which collected information from 10,000 respondents across 20 urban areas regarding mobility patterns after the Covid-19 pandemic. The survey covered various aspects such as demographic characteristics, employment situation, technological usage, trip patterns, and perceptions of different transport options. The survey utilized both online and telephone interviews and ensured representative samples in each city according to demographic and socio-economic profiles.
Article
Transportation
Megersa Abate, Panayotis Christidis, Alloysius Joko Purwanto
JOURNAL OF AIR TRANSPORT MANAGEMENT
(2020)
Article
Computer Science, Information Systems
Philippe Y. R. Sohouenou, Panayotis Christidis, Aris Christodoulou, Luis A. C. Neves, Davide Lo Presti
INTERNATIONAL JOURNAL OF CRITICAL INFRASTRUCTURE PROTECTION
(2020)
Article
Economics
Megersa Abate, Panayotis Christidis
ECONOMICS OF TRANSPORTATION
(2020)
Article
Computer Science, Information Systems
Panayotis Christidis
Article
Economics
Aris Christodoulou, Panayotis Christidis
JOURNAL OF TRANSPORT GEOGRAPHY
(2020)