Author: William H. K. Lam
Publisher: Elsevier
ISBN: 9780080442068
Category : Political Science
Languages : en
Pages : 362
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Book Description
From the contents: Initial planning for urban transit systems (S.C. Wirasinghe). - Public transport timetabling and vehicle scheduling (A. Ceder). - Designing public transport network and routes (A. Ceder). - Transit path choice and assignment model approaches (A. Nuzzolo). - Schedule-based transit assignment models (A. Nuzzolo). - Frequency based transit route choice models (M. Florian).
Author: Zhengyao Yu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Public transportation users typically identify reliability as a key measure of the quality of transit service and a major determinant of transit use. Improving the reliability of a transit system can have numerous potential benefits: increased transit ridership, decreased congestion (which further improves transit reliability), and decreased emissions. With Automated Vehicle Location (AVL) and Automated Passenger Counter (APC) units becoming common on transit vehicles, some transit agencies have begun to provide real-time vehicle location and occupancy information as a means to improve perceived reliability from a user's perspective. However, what users need is more than real-time information. They need accurate predictions of how the system will evolve to better plan their trips. So far, the research of vehicle-level passenger occupancy prediction is missing and all current travel time prediction models overlook the variance of travel times and thus can provide a false sense of precision. This paper aims at establishing regression models to predict passenger occupancies and travel times as well as the uncertainties associated with the predictions. To do this, linear models and survival models were applied in travel time modeling; linear models, count models, and quantile models were applied in passenger occupancy modeling. The impacts of several operational and weather variables were examined and transferability tests validated the models' predictive power across semesters. In travel time models, only one stop pair along the bus route was picked due to some data issues. A log-logistic survival model was found to: 1) give very close point estimates to the linear model; 2) better fit the distribution of the dependent variable; and, 3) provide smaller variances and uncertainty ranges for the predictions. In passenger occupancy models, all stop pairs were included in a single model and three model frameworks (travel-length-based, segment-based and next-stop-based) were proposed and compared. The next-stop-based linear model was found to provide more accurate predictions for nearer downstream stops while the segment-based linear model performed better for stops further away. And also, in comparison to the best linear model, a quantile model was found to 1) better fit the distribution of the dependent variable; and, 2) provide smaller uncertainty ranges for the predictions.
Author: Nigel H. M. Wilson
Publisher: Springer Science & Business Media
ISBN: 1475764677
Category : Business & Economics
Languages : en
Pages : 288
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Book Description
Schedule-Based Dynamic Transit Modeling: Theory and Applications outlines the new schedule-based dynamic approach to mass transit modeling. In the last ten years the schedule-based dynamic approach has been developed and applied especially for operational planning. It allows time evolution of on-board loads and travel times for each run of each line to be obtained, and uses behavioral hypotheses strictly related to transit systems and user characteristics. It allows us to open new frontiers in transit modelling to support network design, timetable setting, investigation of congestion effects, as well as the assessment of new technologies introduction, such as information to users (ITS technologies). The contributors and editors of the book are leading researchers in the field of transportation, and in this volume they build a solid foundation for developing still more sophisticated models. These future models of mass transit systems will continue to add higher levels of accuracy and sensitivity desired in forecasting the performance of public transport systems.
Author: Avishai Ceder
Publisher: CRC Press
ISBN: 1466563923
Category : Technology & Engineering
Languages : en
Pages : 730
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Book Description
Addresses the Challenges Facing Public Transport Policy Makers and OperatorsPublic Transit Planning and Operation: Modeling, Practice and Behavior, Second Edition offers new solutions for delivering both better services and greater efficiency, solutions which have been developed and tested by the author in over thirty years of research work with ma
Author: Nigel H. M. Wilson
Publisher: Springer Science & Business Media
ISBN: 0387848126
Category : Technology & Engineering
Languages : en
Pages : 319
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Book Description
"Schedule-Based Modeling of Transportation Networks: Theory and Applications" follows the book Schedule-Based Dynamic Transit Modeling, published in this series in 2004, recognizing the critical role that schedules play in transportation systems. Conceived for the simulation of transit systems, in the last few years the schedule-based approach has been expanded and applied to operational planning of other transportation schedule services besides mass transit, e.g. freight transport. This innovative approach allows forecasting the evolution over time of the on-board loads on the services and their time-varying performance, using credible user behavioral hypotheses. It opens new frontiers in transportation modeling to support network design, timetable setting, and investigation of congestion effects, as well as the assessment of such new technologies, such as users system information (ITS technologies).
Author: Agostino Nuzzolo
Publisher: CRC Press
ISBN: 1315351986
Category : Computers
Languages : en
Pages : 229
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Book Description
The growing mobility needs of travellers have led to the development of increasingly complex and integrated multi-modal transit networks. Hence, transport agencies and transit operators are now more urgently required to assist in the challenging task of effectively and efficiently planning, managing, and governing transit networks. A pre-condition for the development of an effective intelligent multi-modal transit system is the integration of information and communication technology (ICT) tools that will support the needs of transit operators and travellers. To achieve this, reliable real-time simulation and short-term forecasting of passenger demand and service network conditions are required to provide both real-time traveller information and successfully synchronise transit service planning and operations control. Modelling Intelligent Multi-Modal Transit Systems introduces the current trends in this newly emerging area. Recent developments in information technology and telematics have enabled a large amount of data to become available, thus further attracting transport researchers to set up new models outside the context of the traditional data-driven approach. The alternative demand-supply interaction or network assignment modelling approach has improved greatly in recent years and has a crucial role to play in this new context.
Author: Vukan R. Vuchic
Publisher: John Wiley & Sons
ISBN: 1119488893
Category : Technology & Engineering
Languages : en
Pages : 772
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Book Description
The only modern text to cover all aspects of urban transit operations, planning, and economics Global in scope, up-to-date with current practice, and written by an internationally renowned expert, Urban Transit: Operations, Planning, and Economics is a unique volume covering the full range of issues involved in the operation, planning, and financing of transit systems. Presenting both theoretical concepts and practical, real-world methodologies for operations, planning and analyses of transit systems, this book is a comprehensive single-volume text and reference for students as well as professionals. The thorough examination of technical fundamentals and management principles in this book enables readers to address projects across the globe despite nuances in regulations and laws. Dozens of worked problems and end-of-chapter exercises help familiarize the reader with the formulae and analytical techniques presented in the book's three convenient sections: Transit System Operations and Networks Transit Agency Operations, Economics, and Organization Transit System Planning Visually enhanced with nearly 250 illustrations, Urban Transit: Operations, Planning, and Economics is a reliable source of the latest information for transit planners and operators in transit agencies, metropolitan planning organizations, city governments, consulting firms as well as students of transportation engineering and city planning at universities and in professional courses.
Author: Wenzhong Shi
Publisher: Springer Nature
ISBN: 9811589836
Category : Social Science
Languages : en
Pages : 941
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Book Description
This open access book is the first to systematically introduce the principles of urban informatics and its application to every aspect of the city that involves its functioning, control, management, and future planning. It introduces new models and tools being developed to understand and implement these technologies that enable cities to function more efficiently – to become ‘smart’ and ‘sustainable’. The smart city has quickly emerged as computers have become ever smaller to the point where they can be embedded into the very fabric of the city, as well as being central to new ways in which the population can communicate and act. When cities are wired in this way, they have the potential to become sentient and responsive, generating massive streams of ‘big’ data in real time as well as providing immense opportunities for extracting new forms of urban data through crowdsourcing. This book offers a comprehensive review of the methods that form the core of urban informatics from various kinds of urban remote sensing to new approaches to machine learning and statistical modelling. It provides a detailed technical introduction to the wide array of tools information scientists need to develop the key urban analytics that are fundamental to learning about the smart city, and it outlines ways in which these tools can be used to inform design and policy so that cities can become more efficient with a greater concern for environment and equity.
Author:
Publisher:
ISBN:
Category : Bus lines
Languages : en
Pages : 290
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Book Description
Author: Guido Gentile
Publisher: Springer
ISBN: 3319250825
Category : Technology & Engineering
Languages : en
Pages : 671
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Book Description
This book shows how transit assignment models can be used to describe and predict the patterns of network patronage in public transport systems. It provides a fundamental technical tool that can be employed in the process of designing, implementing and evaluating measures and/or policies to improve the current state of transport systems within given financial, technical and social constraints. The book offers a unique methodological contribution to the field of transit assignment because, moving beyond “traditional” models, it describes more evolved variants that can reproduce:• intermodal networks with high- and low-frequency services;• realistic behavioural hypotheses underpinning route choice;• time dependency in frequency-based models; and• assumptions about the knowledge that users have of network conditionsthat are consistent with the present and future level of information that intelligent transport systems (ITS) can provide. The book also considers the practical perspective of practitioners and public transport operators who need to model and manage transit systems; for example, the role of ITS is explained with regard to their potential in data collection for modelling purposes and validation techniques, as well as with regard to the additional data on network patronage and passengers’ preferences that influences the network-management and control strategies implemented. In addition, it explains how the different aspects of network operations can be incorporated in traditional models and identifies the advantages and disadvantages of doing so. Lastly, the book provides practical information on state-of-the-art implementations of the different models and the commercial packages that are currently available for transit modelling. Showcasing original work done under the aegis of the COST Action TU1004 (TransITS), the book provides a broad readership, ranging from Master and PhD students to researchers and from policy makers to practitioners, with a comprehensive tool for understanding transit assignment models.
