Download or read book Real time Operations Planning and Control of High frequency Transit written by Gabriel Eduardo Sánchez-Martínez and published by . This book was released on 2015 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-frequency transit systems are essential for the socioeconomic and environmental well-being of large and dense cities. The planning and control of their operations are important determinants of service quality. Transit operators are increasingly adopting data collection devices that enable real-time monitoring of vehicle locations and demand, but existing models and current practice limit the utility of this information. This research develops new concepts, frameworks, and models for real-time optimization of operations, utilizing both historical and real-time information originating from connected data collection devices, including automated vehicle location, automated fare collection, and automatic passenger counting systems. Previous control strategies either do not forecast system states or rely on forecasts based on running times and demand assumed to be static. This research develops an optimization model for holding-based control that incorporates dynamics, producing a holding policy that accounts not only for the current state of the system, but also for expected changes in running times and demand, due to both exogenous and endogenous dynamics. This information advantage can lead to improved performance when a transit service faces typical changes in running times and demand over time, as well as potentially disruptive events such as signal failures, disabled rolling stock, and demand surges. Anticipatory control policies allow the transit service to react before disruptions develop. It is shown that information about dynamics is particularly valuable when it leads to better predictions of capacity being reached. Although headway and optimization-based control strategies generally outperform schedule-adherence strategies, high-frequency operations are mostly planned with schedules, in part because operators must observe resource constraints (neglected by most control strategies) while planning and delivering service. This research develops a schedule-free paradigm for high-frequency transit operations, in which trip sequences and departure times are optimized in real-time, employing stop-skipping strategies and utilizing real-time information to maximize service quality while satisfying operator resource constraints. Following a discussion of possible methodological approaches, a simple methodology is applied to operate a simulated transit service without schedules. Results demonstrate the feasibility of the new paradigm and suggest possible methodology improvements.
Download or read book Urban Transit written by Vukan R. Vuchic and published by John Wiley & Sons. This book was released on 2017-11-13 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Public Transportation Systems Principles Of System Design Operations Planning And Real time Control written by Daganzo Carlos F and published by World Scientific. This book was released on 2019-03-20 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book explains how to think systematically about public transportation through the lens of physics models. The book includes aspects of system design, resource management, operations and control. It presents both, basic theories that reveal fundamental issues, and practical recipes that can be readily used for real-world applications. The principles conveyed in this book cover not only traditional transit modes such as subways, buses and taxis but also the newer mobility services that are being enabled by advances in telematics and robotics.Although the book is rigorous, it includes numerous exercises and a presentation style suitable for senior undergraduate or entry-level graduate students in engineering. The book can also serve as a reference for transportation professionals and researchers keen in this field.
Download or read book Using Real time Data to Improve Reliability on High frequency Transit Services written by David W. Maltzan and published by . This book was released on 2015 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, automatically-collected data from many transit agencies have been made available to the public in real time. This has dramatically improved the experience of riding transit, by allowing passengers to use detailed information on the current state of service to make more informed travel decisions. The "open data" movement has allowed independent mobile-phone app developers to create a variety of useful tools to improve the passenger experience. However, agencies' use of real-time data for operational purposes has lagged behind customer-facing app development. This research examines the use of real-time data for the application of operational control strategies on transit services. Two high-frequency bus routes of the Massachusetts Bay Transportation Authority are used as a case study. It begins with the development of an application to download, interpret, and present data on bus service and recommended control actions in a graphical user interface. This application is then used to conduct an experiment with a terminal-based holding strategy on MBTA Route 1. The results of this experiment drive further investigation into the causes of deviations from scheduled or assigned departure times at terminals. To supplement the experimental data, a simulation model of MBTA Routes 1 and 28 is developed. This simulation is used to test additional control strategies, as well as the effect of reducing unexplained operator deviations from assigned departure times. The research finds that real-time data can be used to create significant operational improvements. In particular, holding strategies at terminals, along with reducing unexplained operator deviations from assigned terminal departure times, have a strong effect. Several specific recommendations are made for a number of strategies that the MBTA can use to improve the precision of terminal departure times on bus services. This research also finds that holding at midpoints and short-turning can provide some additional benefit, but the costs and benefits to passengers of these strategies are more complicated and should be investigated with further research and implemented using optimization schemes rather than the heuristic rules used here.
Download or read book Modelling Intelligent Multi Modal Transit Systems written by Agostino Nuzzolo and published by CRC Press. This book was released on 2017-02-17 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Management written by and published by . This book was released on 1975 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Planning Handbook written by ITE (Institute of Transportation Engineers) and published by John Wiley & Sons. This book was released on 2016-08-01 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-disciplinary approach to transportation planning fundamentals The Transportation Planning Handbook is a comprehensive, practice-oriented reference that presents the fundamental concepts of transportation planning alongside proven techniques. This new fourth edition is more strongly focused on serving the needs of all users, the role of safety in the planning process, and transportation planning in the context of societal concerns, including the development of more sustainable transportation solutions. The content structure has been redesigned with a new format that promotes a more functionally driven multimodal approach to planning, design, and implementation, including guidance toward the latest tools and technology. The material has been updated to reflect the latest changes to major transportation resources such as the HCM, MUTCD, HSM, and more, including the most current ADA accessibility regulations. Transportation planning has historically followed the rational planning model of defining objectives, identifying problems, generating and evaluating alternatives, and developing plans. Planners are increasingly expected to adopt a more multi-disciplinary approach, especially in light of the rising importance of sustainability and environmental concerns. This book presents the fundamentals of transportation planning in a multidisciplinary context, giving readers a practical reference for day-to-day answers. Serve the needs of all users Incorporate safety into the planning process Examine the latest transportation planning software packages Get up to date on the latest standards, recommendations, and codes Developed by The Institute of Transportation Engineers, this book is the culmination of over seventy years of transportation planning solutions, fully updated to reflect the needs of a changing society. For a comprehensive guide with practical answers, The Transportation Planning Handbook is an essential reference.
Download or read book Transportation Research Record written by and published by . This book was released on 2004 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supporting Operational and Real time Planning Tasks of Road Freight Transport with Machine Learning Guiding the Implementation of Machine Learning Algorithms written by Sandra Lechtenberg and published by Logos Verlag Berlin GmbH. This book was released on 2023-10-26 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: World-wide trends such as globalization, demographic shifts, increased customer demands, and shorter product lifecycles present a significant challenge to the road freight transport industry: meeting the growing road freight transport demand economically while striving for sustainability. Artificial intelligence, particularly machine learning, is expected to empower transport planners to incorporate more information and react quicker to the fast-changing decision environment. Hence, using machine learning can lead to more efficient and effective transport planning. However, despite the promising prospects of machine learning in road freight transport planning, both academia and industry struggle to identify and implement suitable use cases to gain a competitive edge. In her dissertation, Sandra Lechtenberg explores how machine learning can enhance decision-making in operational and real-time road freight transport planning. She outlines an implementation guideline, which involves identifying decision tasks in planning processes, assessing their suitability for machine learning, and proposing steps to follow when implementing respective algorithms.
Download or read book Public Transit written by National Research Council (U.S.). Transportation Research Board and published by Transportation Research Board National Research. This book was released on 1992 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP 7500 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1982 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Running Time Variability and Resource Allocation written by Gabriel Eduardo Sánchez-Martínez and published by . This book was released on 2013 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Running time variability is one of the most important factors determining service quality and operating cost of high-frequency bus transit. This research aims to improve performance analysis tools currently used in the bus transit industry, particularly for measuring running time variability and understanding its effect on resource allocation using automated data collection systems such as AVL. Running time variability comes from both systematic changes in ridership and traffic levels at different times of the day, which can be accounted for in service planning, and the inherent stochasticity of homogeneous periods, which must be dealt with through real-time operations control. An aggregation method is developed to measure the non-systematic variability of arbitrary time periods. Visual analysis tools are developed to illustrate running time variability by time of day at the direction and segment levels. The suite of analysis tools makes variability analysis more approachable, potentially leading to more frequent and consistent evaluations. A discrete event simulation framework is developed to evaluate hypothetical modifications to a route's fleet size using automatically collected data. A simple model based on this framework is built to demonstrate its use. Running times are modeled at the segment level, capturing correlation between adjacent segments. Explicit modeling of ridership, though supported by the framework, is not included. Validation suggests that running times are modeled accurately, but that further work in modeling terminal dispatching, dwell times, and real-time control is required to model headways robustly. A resource allocation optimization framework is developed to maximize service performance in a group of independent routes, given their headways and a total fleet size constraint. Using a simulation model to evaluate the performance of a route with varying fleet sizes, a greedy optimizer adjusts allocation toward optimality. Due to a number of simplifying assumptions, only minor deviations from the current resource allocation are considered. A potential application is aiding managers to fine-tune resource allocation to improve resource effectiveness.
Download or read book Operations Research and Decision Aid Methodologies in Traffic and Transportation Management written by Martine Labbe and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every one relies on some kind of transportation system nearly every day. Go ing to work, shopping, dropping children at school and many other cultural or social activities imply leaving home, and using some form of transportation, which we expect tobe eflicient and reliable. Of course, efliciency and reliabil ity do not occur by chance, but require careful and often relatively complex planning by transportation system managers, both in the public and private sectors. It has long been recognized that mathematics, and, more specifically, op erations research is an important tool of this planning process. However, the range of skills required to cover both fields, even partially, is very large, and the opportunities to gather people with this very diverse expertise are too few. The organization of the NATO Advanced Studies Institute on "Opera tions Research and Decision Aid Methodologies in Traflic and Transportation Management" in March 1997 in Balatonfüred, Hungary, was therefore more than welcome and the group of people that gathered for a very studious two weeks on the shores of the beautiful lake Balaton did really enjoy the truly multidisciplinary and high scientific level of the meeting. The purpose of the present volume is to report, in a chronological order, the various questions that were considered by the lecturers and the' students at the institute. After a general introduction to the topic, the first week focused on issues related to traflic modeling, mostly in an urban context.
Download or read book Intelligent Transportation and Planning Breakthroughs in Research and Practice written by Management Association, Information Resources and published by IGI Global. This book was released on 2018-02-02 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt: From driverless cars to vehicular networks, recent technological advances are being employed to increase road safety and improve driver satisfaction. As with any newly developed technology, researchers must take care to address all concerns, limitations, and dangers before widespread public adoption. Intelligent Transportation and Planning: Breakthroughs in Research and Practice is an innovative reference source for the latest academic material on the applications, management, and planning of intelligent transportation systems. Highlighting a range of topics, such as automatic control, infrastructure systems, and system architecture, this publication is ideally designed for engineers, academics, professionals, and practitioners actively involved in the transportation planning sector.
Download or read book Cooperative Operation Optimization for Port Groups written by Bo Lu and published by Springer Nature. This book was released on 2023-08-31 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on port collaborative operation, an important emerging topic in the port and shipping industry, and deeply analyzes the high-quality collaborative mechanism of port groups from the perspectives of port groups’ supply chain cooperative operation mechanism, port groups’ logistics network optimization, port groups’ collaborative scheduling optimization of resources, etc. Based on the combination of qualitative and quantitative analysis on China’s cases, this book makes comprehensive use of game theory, network optimization, multi-dimensional resource cooperative scheduling optimization, and other theories and methods, and promotes the update and innovation of current research methods in related research areas. The feasible policy insights for optimization of port groups’ collaborative operation are suggested at the end of book, which will help with the improvement of economic, environmental, and social benefits of port groups, and promote the port industry’s innovation, upgrading, and transformation. The translation was done with the help of artificial intelligence. A subsequent human revision was done primarily in terms of content. The present version has been revised technically and linguistically by the authors in collaboration with a professional translator.
Download or read book Public Transport Optimization written by Konstantinos Gkiotsalitis and published by Springer Nature. This book was released on 2023-01-20 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook provides a comprehensive step-by-step guide for new public transport modelers. It includes an introduction to mathematical modeling, continuous and discrete optimization, numerical optimization, computational complexity analysis, metaheuristics, and multi-objective optimization. These tools help engineers and modelers to use better existing public transport models and also develop new models that can address future challenges. By reading this book, the reader will gain the ability to translate a future problem description into a mathematical model and solve it using an appropriate solution method. The textbook provides the knowledge needed to develop highly accurate mathematical models that can serve as decision support tools at the strategic, tactical, and operational planning levels of public transport services. Its detailed description of exact optimization methods, metaheuristics, bi-level, and multi-objective optimization approaches together with the detailed description of implementing these approaches in classic public transport problems with the use of open source tools is unique and will be highly useful to students and transport professionals.
Download or read book Department of Transportation and Related Agencies Appropriations for 1999 Testimony of members of Congress and public witnesses written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 1998 with total page 1376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
