scholarly journals User-based representation of time-resolved multimodal public transportation networks

2016 ◽  
Vol 3 (7) ◽  
pp. 160156 ◽  
Author(s):  
Laura Alessandretti ◽  
Márton Karsai ◽  
Laetitia Gauvin
Keyword(s):  
Public Transportation ◽  
Urban Areas ◽  
Quantitative Description ◽  
Transportation Systems ◽  
Time Resolved ◽  
The Public ◽  
Network Layers ◽  
Transportation Modes ◽  
Total Travel Time ◽  
Public Transportation Systems

Multimodal transportation systems, with several coexisting services like bus, tram and metro, can be represented as time-resolved multilayer networks where the different transportation modes connecting the same set of nodes are associated with distinct network layers. Their quantitative description became possible recently due to openly accessible datasets describing the geo-localized transportation dynamics of large urban areas. Advancements call for novel analytics, which combines earlier established methods and exploits the inherent complexity of the data. Here, we provide a novel user-based representation of public transportation systems, which combines representations, accounting for the presence of multiple lines and reducing the effect of spatial embeddedness, while considering the total travel time, its variability across the schedule, and taking into account the number of transfers necessary. After the adjustment of earlier techniques to the novel representation framework, we analyse the public transportation systems of several French municipal areas and identify hidden patterns of privileged connections. Furthermore, we study their efficiency as compared to the commuting flow. The proposed representation could help to enhance resilience of local transportation systems to provide better design policies for future developments.

Planning Innovative Public Transportation Systems for Arlington, Texas

1996 ◽  
Vol 1521 (1) ◽  
pp. 20-28
Author(s):  
David A. Faria ◽  
Wilma Smith
Keyword(s):  
Public Transportation ◽  
Transportation Systems ◽  
General Will ◽  
Transportation Services ◽  
The Public ◽  
Niche Concept ◽  
The Individual ◽  
Alternative Community ◽  
Public Transportation Systems ◽  
The City

A study was done to develop various innovative transportation strategies to address the changing travel needs of Arlington, Texas, residents. The study was guided by the Arlington Community Transportation Study Committee. It developed the transportation niche concept: the ability to use alternative community transportation services to address specific needs of the community in different parts of the city. Five high-priority niches were studied in detail. The success of the individual niches in particular and the integrated transportation system in general will rely heavily on the cooperation and coordination between the public and the private sectors and the acceptance of the niche concept by the general public.

Distributed Data Management of Daily Car Pooling Problems

2011 ◽  
pp. 408-412
Author(s):  
Roberto Wolfler Calvo ◽  
Fabio de Luigi ◽  
Palle Haastrup ◽  
Vittorio Maniezzo
Keyword(s):  
Public Transportation ◽  
Urban Areas ◽  
Transportation Systems ◽  
Transfer Velocity ◽  
Public And Private ◽  
Transportation Demand ◽  
Freight Transportation Demand ◽  
Set Up ◽  
Public Transportation Systems

The increased human mobility, combined with high use of private cars, increases the load on the environment and raises issues about the quality of life. The use of private cars lends to high levels of air pollution in cities, parking problems, noise pollution, congestion, and the resulting low transfer velocity (and, thus, inefficiency in the use of public resources). Public transportation service is often incapable of effectively servicing non-urban areas, where cost-effective transportation systems cannot be set up. Based on investigations during the last years, problems related to traffic have been among those most commonly mentioned as distressing, while public transportation systems inherently are incapable of facing the different transportation needs arising in modern societies. A solution to the problem of the increased passenger and freight transportation demand could be obtained by increasing both the efficiency and the quality of public transportation systems, and by the development of systems that could provide alternative solutions in terms of flexibility and costs between the public and private ones. This is the rationale behind so-called Innovative Transport Systems (ITS) (Colorni et al., 1999), like car pooling, car sharing, dial-a-ride, park-and-ride, card car, park pricing, and road pricing, which are characterized by the exploitation of innovative organizational elements and by a large flexibility in their management (e.g., traffic restrictions and fares can vary according with the time of day).

scholarly journals COVID-19 and Public Transportation: Current Assessment, Prospects, and Research Needs

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Alejandro Tirachini ◽  
Oded Cats
Keyword(s):  
Public Transportation ◽  
Transportation Systems ◽  
The State ◽  
Research Needs ◽  
Sustainable Mobility ◽  
The Public ◽  
Critical Issues ◽  
Contagion Risk ◽  
State Of Affairs ◽  
Public Transportation Systems

The COVID-19 pandemic poses a great challenge for contemporary public transportation worldwide, resulting from an unprecedented decline in demand and revenue. In this paper, we synthesize the state-of-the-art, up to early June 2020, on key developments regarding public transportation and the COVID-19 pandemic, including the different responses adopted by governments and public transportation agencies around the world, and the research needs pertaining to critical issues that minimize contagion risk in public transportation in the so-called post-lockdown phase. While attempts at adherence to physical distancing (which challenges the very concept of mass public transportation) are looming in several countries, the latest research shows that for closed environments such as public transportation vehicles, the proper use of face masks has significantly reduced the probability of contagion. The economic and social effects of the COVID-19 outbreak in public transportation extend beyond service performance and health risks to financial viability, social equity, and sustainable mobility. There is a risk that if the public transportation sector is perceived as poorly transitioning to post-pandemic conditions, that viewing public transportation as unhealthy will gain ground and might be sustained. To this end, this paper identifies the research needs and outlines a research agenda for the public health implications of alternative strategies and scenarios, specifically measures to reduce crowding in public transportation. The paper provides an overview and an outlook for transit policy makers, planners, and researchers to map the state-of-affairs and research needs related to the impacts of the pandemic crisis on public transportation. Some research needs require urgent attention given what is ultimately at stake in several countries: restoring the ability of public transportation systems to fulfill their societal role.

Map-Matching Algorithm for Applications in Multimodal Transportation Network Modeling

2015 ◽  
Vol 2537 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Kenneth Perrine ◽  
Alireza Khani ◽  
Natalia Ruiz-Juri
Keyword(s):  
Public Transportation ◽  
Transportation Network ◽  
Data Representation ◽  
Transportation Systems ◽  
Data Sets ◽  
The Public ◽  
Standard Data ◽  
Planning Models ◽  
Transit Agencies ◽  
Public Transportation Systems

Generalized Transit Feed Specification (GTFS) files have gained wide acceptance by transit agencies, which now provide them for most major metropolitan areas. The public availability GTFSs combined with the convenience of presenting a standard data representation has promoted the development of numerous applications for their use. Whereas most of these tools are focused on the analysis and utilization of public transportation systems, GTFS data sets are also extremely relevant for the development of multimodal planning models. The use of GTFS data for integrated modeling requires creating a graph of the public transportation network that is consistent with the roadway network. The former is not trivial, given limitations of networks often used for regional planning models and the complexity of the roadway system. A proposed open-source algorithm matches GTFS geographic information to existing planning networks and is also relevant for real-time in-field applications. The methodology is based on maintaining a set of candidate paths connecting successive geographic points. Examples of implementations using traditional planning networks and a network built from crowdsourced OpenStreetMap data are presented. The versatility of the methodology is also demonstrated by using it for matching GPS points from a navigation system. Experimental results suggest that this approach is highly successful even when the underlying roadway network is not complete. The proposed methodology is a promising step toward using novel and inexpensive data sources to facilitate and eventually transform the way that transportation models are built and validated.

Reluctance to Transmit Bad News When the Recipient is Unknown: Experiments in Five Nations

1979 ◽  
Vol 7 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Edgar O'Neal ◽  
Douglas Levine ◽  
James Frank
Keyword(s):  
Public Transportation ◽  
Transportation Systems ◽  
Bad News ◽  
Frankfurt Am Main ◽  
High Importance ◽  
The Public ◽  
Mum Effect ◽  
Public Transportation Systems

Postcards containing a message either high or low in importance, and either favorable or unfavorable for the recipient, were individually "lost" in the public transportation systems of Paris, Madrid, London, Geneva, and Frankfurt am Main. More postcards were returned when the message was favorable than when it was unfavorable, but only in the high importance conditions. This pattern of results occurred in each location except Madrid. The findings are discussed in terms of Rosen and Tesser's (1970) reluctance to bear bad news (MUM) effect.

scholarly journals Multiobjective design of sustainable public transportation systems

2021 ◽  
Author(s):  
D.G. Rossit ◽  
S. Nesmachnow ◽  
J. Toutouh
Keyword(s):  
Public Transportation ◽  
Transportation Network ◽  
Complex Problem ◽  
Transportation Systems ◽  
Modern Cities ◽  
Proposed Model ◽  
Conflicting Objectives ◽  
Total Travel Time ◽  
Public Transportation Systems ◽  
Multiobjective Design

The design of the bus network is a complex problem in modern cities, since different conflicting objectives have to be considered, from both the perspective of bus companies and the citizens. This article presents a multiobjective model for designing a sustainable public transportation network that simultaneously optimizes the covered travel demands by passengers, the total travel time, and the generated pollution. The proposed model is solved using exact weighted sum and a heuristic procedure based on the standard shortest path problem. Preliminary tests were performed in small real-world instances of Montevideo, Uruguay. Experiments allowed obtaining a set of compromising solutions that in turn allow exploring different trade-off among the optimization criteria. The proposed heuristic was competitive, being able to find a good compromising solution in short computing times.

scholarly journals Towards a Sustainable Public Transportation: Replacing the Conventional Taxis by a Hybrid Taxi Fleet in the West Bank, Palestine

2020 ◽  
Vol 17 (23) ◽  
pp. 8940 ◽  
Author(s):  
Fady M. A. Hassouna ◽  
Mahmoud Assad
Keyword(s):  
Public Transportation ◽  
Urban Areas ◽  
West Bank ◽  
Transportation Systems ◽  
The West ◽  
Environmental Impact Assessments ◽  
The Future ◽  
Vehicle Technologies ◽  
Public Transportation Systems ◽  
Transportation Agencies

Recently, developing sustainable public transportation systems has been highlighted by decision makers and transportation agencies, due to the development of urban areas and the related environmental problems. Implementing new vehicle technologies has been introduced as an appropriate alternative to the conventional taxis. Hybrid electrical vehicles (HEVs) have been the potential candidates for replacing the conventional taxis, since they are more eco-friendly than conventional ones and even more reliable than electric vehicles (EVs) as a mode of public transportation. In this study, current and future environmental impact assessments have been determined for the taxi fleet in the West Bank, Palestine, and the implications of using new vehicle technologies (hybrid taxis) as a replacement of the conventional taxi fleet have been investigated. In order to perform this study, firstly, the data of the number of taxis for the period of 1994–2018 have been collected and a prediction model for the future number of taxis has been developed. The expected total amounts of consumed fuels have been then estimated. Finally, the current and the future N2O and CO2, and emissions, have been estimated and the expected influences of hybrid taxis have been determined. The results of the analysis have concluded that replacing 50% of conventional taxis with a hybrid fleet could achieve 42.3% and 28% reductions in N2O and CO2, respectively, in the next 10 years. A 395% increase in CH4 could be obtained due to the higher amount of CH4 that is produced by the gasoline combustion compared to the diesel fuel, since hybrid vehicles have gasoline-based engines (GHG in terms of CO2-equivalent could be increased by 28.2%).

scholarly journals Intelligent automated public transportation systems with enhanced security

2021 ◽  
Vol 23 (06) ◽  
pp. 1608-1617
Author(s):  
K. Sivakumar ◽  
Keyword(s):  
Public Transport ◽  
Public Transportation ◽  
Complete Information ◽  
Transportation Systems ◽  
Average Income ◽  
The Public ◽  
Public Transport System ◽  
Time Distance ◽  
Public Transportation Systems ◽  
Full Population

A significant population of our country is folks with an average income who depend on public transportation to go about. But this method of transport has become one of the most chaotic and also has a high percentage of crime sites for numerous incidents. Hence this method has the most insecure position for the public and also pollution generating state. Out of the full population of India as of 2017, around 5.5 percent of the total GDP goes by road dependent on public transit. The aim of this work is to develop a Smart automatic Public transport System with improved security to provide convenience to passengers who are unaware of the complete information about the buses such as availability of seats, journey time, distance traveled, and to make sure they experience the same comfort as their personal vehicles.

Sign in / Sign up

Export Citation Format

Share Document