Railway Transportation Systems

Download Railway Transportation Systems PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 1498788157
Total Pages : 580 pages
Book Rating : 4.4/5 (987 download)

DOWNLOAD NOW!


Book Synopsis Railway Transportation Systems by : Christos N. Pyrgidis

Download or read book Railway Transportation Systems written by Christos N. Pyrgidis and published by CRC Press. This book was released on 2016-04-21 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incorporates More Than 25 Years of Research and ExperienceRailway Transportation Systems: Design, Construction and Operation presents a comprehensive overview of railway passenger and freight transport systems, from design through to construction and operation. It covers the range of railway passenger systems, from conventional and high speed inter

Rolling Stock

Download Rolling Stock PDF Online Free

Author :
Publisher :
ISBN 13 : 9783962452049
Total Pages : pages
Book Rating : 4.4/5 (52 download)

DOWNLOAD NOW!


Book Synopsis Rolling Stock by : Éric Fontanel

Download or read book Rolling Stock written by Éric Fontanel and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

China's High-Speed Rail Development

Download China's High-Speed Rail Development PDF Online Free

Author :
Publisher : World Bank Publications
ISBN 13 : 1464814252
Total Pages : 101 pages
Book Rating : 4.4/5 (648 download)

DOWNLOAD NOW!


Book Synopsis China's High-Speed Rail Development by : Martha Lawrence

Download or read book China's High-Speed Rail Development written by Martha Lawrence and published by World Bank Publications. This book was released on 2019-06-24 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, China has built 25,000 km of dedicated highspeed railway—more than the rest of the world combined. What can we learn from this remarkable experience? China’s High-Speed Rail Development examines the Chinese experience to draw lessons for countries considering investing in high-speed rail. The report scrutinizes the planning and delivery mechanisms that enabled the rapid construction of the high-speed rail system. It highlights the role of long-term planning, consistent plan execution, and a joint venture structure that ensures active participation of provincial and local governments in project planning and financing. Traffic on China’s high-speed trains has grown to 1.7 billion passengers a year. The study examines the characteristics of the markets for which high-speed rail is competitive in China. It discusses the pricing and service design considerations that go into making high-speed rail services competitive with other modes and factors such as good urban connectivity that make the service attractive to customers. One of the most remarkable aspects of the Chinese experience is the rapid pace of high-quality construction. The report looks at the role of strong capacity development within and cooperation among China Railway Corporation, rail manufacturers, universities, research institutions, laboratories, and engineering centers that allowed for rapid technological advancement and localization of technology. It describes the project delivery structures and incentives for delivering quality and timely results. Finally, the report analyzes the financial and economic sustainability of the investment in high-speed rail. It finds that a developing country can price high-speed rail services affordably and still achieve financial viability, but this requires very high passenger density. Economic viability similarly depends on high passenger density.

Principles of Railway Location and Design

Download Principles of Railway Location and Design PDF Online Free

Author :
Publisher : Academic Press
ISBN 13 : 0128134887
Total Pages : 648 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!


Book Synopsis Principles of Railway Location and Design by : Sirong Yi

Download or read book Principles of Railway Location and Design written by Sirong Yi and published by Academic Press. This book was released on 2017-10-25 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Railway Location and Design examines classification and classing methods of railway networks and expresses theories and methods of railway route selection and design. Railway networks represent modal transfer, which significantly alleviates traffic congestion and pollution The book introduces capacity enhancing methods for existing railways and implementation plans and technical conditions for improving existing passenger railways, building new high speed railways and developing heavy haul railways. The book covers ten areas of unfavorable geological conditions including slide areas, debris flow areas and earthquake areas. Practical solutions with detailed presentations have been provided. This valuable reference book summarizes and extracts the high speed railway route selection design. The book covers basic principles and methods by referring to research data of high speed railway technology in China and other countries, as well as engineering practice data. - Provides classification and classing methods of railway networks, integrated with principles and methods of railway route selection and design - Describes enhancing methods for existing railways, and an implementation plan for existing passenger railways, new high speed railways and heavy haul railways - Presents route selection principles and methods for regions with bad geological conditions, including landslide, debris flow and earthquake

Electrical Railway Transportation Systems

Download Electrical Railway Transportation Systems PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119386802
Total Pages : 628 pages
Book Rating : 4.1/5 (193 download)

DOWNLOAD NOW!


Book Synopsis Electrical Railway Transportation Systems by : Morris Brenna

Download or read book Electrical Railway Transportation Systems written by Morris Brenna and published by John Wiley & Sons. This book was released on 2018-03-07 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Allows the reader to deepen their understanding of various technologies for both fixed power supply installations of railway systems and for railway rolling stock This book explores the electric railway systems that play a crucial role in the mitigation of congestion and pollution caused by road traffic. It is divided into two parts: the first covering fixed power supply systems, and the second concerning the systems for railway rolling stock. In particular, after a historical introduction to the framework of technological solutions in current use, the authors investigate electrification systems for the power supply of rail vehicles, trams, and subways. Electrical Railway Transportation Systems explores the direct current systems used throughout the world for urban and suburban transport, which are also used in various countries for regional transport. It provides a study of alternating current systems, whether for power supply frequency or for special railway frequency, that are used around the world for the electrification of railway lines, long-distance lines, and high-speed lines. In addition, this resource: Analyzes multiple railway systems from a theoretical and realizable vantage point, with particular regard to functionality, electromagnetic compatibility, and interferences with other electrical systems Studies electric traction railway vehicles, presenting various types of drives and auxiliary devices currently in circulation Discusses solutions employed to ensure interoperability of vehicles that run along lines powered by different systems (e.g., DC and AC, at different frequencies) Electrical Railway Transportation Systems is an ideal text for graduate students studying the subject as well as for industry professionals working in the field.

Engineering Asset Management 2011

Download Engineering Asset Management 2011 PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 1447149939
Total Pages : 691 pages
Book Rating : 4.4/5 (471 download)

DOWNLOAD NOW!


Book Synopsis Engineering Asset Management 2011 by : Jay Lee

Download or read book Engineering Asset Management 2011 written by Jay Lee and published by Springer Science & Business Media. This book was released on 2013-07-30 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text represents state-of-the-art trends and developments in the emerging field of engineering asset management as presented at the Sixth World Congress on Engineering Asset Management (WCEAM) held in Cincinnati, OH, USA from October 3-5, 2011 The Proceedings of the WCEAM 2011 is an excellent reference for practitioners, researchers and students in the multidisciplinary field of asset management, covering topics such as: Asset condition monitoring and intelligent maintenance; Asset data warehousing, data mining and fusion; Asset performance and level-of-service models; Design and lifecycle integrity of physical assets; Deterioration and preservation models for assets; Education and training in asset management; Engineering standards in asset management; Fault diagnosis and prognostics; Financial analysis methods for physical assets; Human dimensions in integrated asset management; Information quality management; Information systems and knowledge management; Intelligent maintenance; Intelligent sensors and devices; Maintenance strategies in asset management; Optimization decisions in asset management; Prognostics & Health Management; Risk management in asset management; Strategic asset management; and Sustainability in asset management.

Economic Analysis of High Speed Rail in Europe

Download Economic Analysis of High Speed Rail in Europe PDF Online Free

Author :
Publisher : Fundacion BBVA
ISBN 13 : 8492937327
Total Pages : 136 pages
Book Rating : 4.4/5 (929 download)

DOWNLOAD NOW!


Book Synopsis Economic Analysis of High Speed Rail in Europe by :

Download or read book Economic Analysis of High Speed Rail in Europe written by and published by Fundacion BBVA. This book was released on 2012-07-02 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Este informe pretende contribuir al análisis económico de los proyectos de inversión en alta velocidad ferroviaria. La evaluación económica de proyectos puede ayudar a los gobiernos a formarse una idea más precisa sobre los beneficios esperados de distintas líneas de actuación que absorben dinero público para resolver un mismo problema de transporte. En este informe se trata de determinar las circunstancias en las que la inversión en alta velocidad es socialmente deseable y en que otras la sociedad gana posponiendo la inversión. La red de alta velocidad puede construirse gradualmente, añadiendo nuevas líneas una vez que la evaluación económica muestra una rentabilidad social positiva.

Railway Management and Engineering

Download Railway Management and Engineering PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1351150839
Total Pages : 500 pages
Book Rating : 4.3/5 (511 download)

DOWNLOAD NOW!


Book Synopsis Railway Management and Engineering by : V Profillidis

Download or read book Railway Management and Engineering written by V Profillidis and published by Routledge. This book was released on 2017-11-30 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a rapidly changing world, with increasing competition in all sectors of transportation, railways are in a period of restructuring their management and technology. New methods of organization are introduced, commercial and tariff policies change radically, a more entrepreneurial spirit is required. At the same time, new high-speed tracks are being constructed and old tracks are renewed, high-comfort rolling stock vehicles are being introduced, logistics and combined transport are being developed. Awareness of environmental issues and search for greater safety give to the railways a new role within the transportation system. Meanwhile, methods of analysis have significantly evolved, principally due to computer applications and new ways of thinking and approaching old problems. Therefore it becomes necessary to come up with a new scientific approach to tackle management and engineering aspects of railways, to understand in-depth the origins and inter-relationships of the various situations and phenomena and to suggest the appropriate methods and solutions to solve the various emerging problems. This book aims to cover the need for a new scientific approach for railways. It is written for railway managers, economists and engineers, consulting economists and engineers, students of schools of engineering, transportation and management. The book is divided into three distinct parts: Part A deals with the management of railways, Part B deals with the track and, Part C deals with rolling stock and environmental topics. Each chapter of the book contains the necessary theoretical analysis of the phenomena studied, the recommended solutions, applications, charts and design of the specific railway component. In this way, both the requirement for a theoretical analysis is met, and the need of the railway manager and engineer for tables, nomographs, regulations, etc. is satisfied. Railways in Europe have separated activities of infrastructure from those of operation. In other parts of the world, however, railways remain unified. The book addresses both situation. Railways present great differences in their technologies. Something may be valid for one such technology, but not for another. To overcome this problem, regulations of the International Union of Railways (UIC) as well as European Standardization (CEN) have been used to the greatest extent possible. Whenever a specific technology or method is presented, the limits of its application are clearly emphasized.

Noise and Vibration Mitigation for Rail Transportation Systems

Download Noise and Vibration Mitigation for Rail Transportation Systems PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3662448327
Total Pages : 724 pages
Book Rating : 4.6/5 (624 download)

DOWNLOAD NOW!


Book Synopsis Noise and Vibration Mitigation for Rail Transportation Systems by : Jens C.O. Nielsen

Download or read book Noise and Vibration Mitigation for Rail Transportation Systems written by Jens C.O. Nielsen and published by Springer. This book was released on 2014-11-05 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book reports on the 11th International Workshop on Railway Noise, held on 9 – 13 September, 2013, in Uddevalla, Sweden. The event, which was jointly organized by the Competence Centre Chalmers Railway Mechanics (CHARMEC) and the Departments of Applied Mechanics and Applied Acoustics at Chalmers University of Technology in Gothenburg, Sweden, covered a broad range of topics in the field of railway noise and vibration, including: prospects, legal regulations and perceptions; wheel and rail noise; prediction, measurements and monitoring; ground-borne vibration; squeal noise and structure-borne noise; and aerodynamic noise generated by high-speed trains. Further topics included: resilient track forms; grinding, corrugation and roughness; and interior noise and sound barriers. This book, which consists of a collection of peer-reviewed papers originally submitted to the workshop, not only provides readers with an overview of the latest developments in the field, but also offers scientists and engineers essential support in their daily efforts to identify, understand and solve a number of problems related to railway noise and vibration, and to achieve their ultimate goal of reducing the environmental impact of railway systems.

The Economics and Politics of High-Speed Rail

Download The Economics and Politics of High-Speed Rail PDF Online Free

Author :
Publisher : Lexington Books
ISBN 13 : 0739171240
Total Pages : 212 pages
Book Rating : 4.7/5 (391 download)

DOWNLOAD NOW!


Book Synopsis The Economics and Politics of High-Speed Rail by : Daniel Albalate

Download or read book The Economics and Politics of High-Speed Rail written by Daniel Albalate and published by Lexington Books. This book was released on 2012-06-14 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technological revolution linked to high speed rail (HSR) has been accompanied by myths and claims about its contribution to society and the economy. Although HSR is unquestionably a technological advance that has become a symbol of modernity, this review and analysis of the international experiences shows that the conditions necessary to have a positive impact, economically, socially and environmentally, are enormously restrictive. The Economics and Politics of High Speed Rail: Lessons from Experiences Abroad, by Daniel Albalate and Germà Bel, introduces the main questions policy makers and scholars should examine when considering and studying HSR implementation, with particular emphasis on the US’s recent interest in this technology and possible application in California. Albalate and Bel then review the experiences of the most significant implementations of HSR around the globe. This in-depth international perspective includes chapters on the pioneers of HSR (Japan and France), the European followers (Germany, Spain and Italy), as well as Asian experiences in China, Taiwan, and Korea. Albalate and Bel’s study provides a clear distinction between the myths and realities associated with this transportation innovation. Among the most relevant findings, this study highlights how HSR projects that do not satisfy highly restrictive conditions—on mobility patterns, measured costs, and economically rational designs—that make it desirable have been the source of huge financial debacles and the economic failure of HSR in most cases, which result in unfortunate consequences for taxpayers. The Economics and Politics of High Speed Rail is a rigorous investigation of the economic and political challenges and ramifications of implementing new public transportation technology.

Dynamics of Coupled Systems in High-Speed Railways

Download Dynamics of Coupled Systems in High-Speed Railways PDF Online Free

Author :
Publisher : Academic Press
ISBN 13 : 0128134011
Total Pages : 612 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!


Book Synopsis Dynamics of Coupled Systems in High-Speed Railways by : Weihua Zhang

Download or read book Dynamics of Coupled Systems in High-Speed Railways written by Weihua Zhang and published by Academic Press. This book was released on 2019-11-25 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics of Coupled Systems in High-Speed Railways: Theory and Practice presents the relationship between various coupled systems that can affect train operation, including interaction between track and train, the pantograph-catenary system and train, power supply system and train, and airflow and train, with respect to the structure and characteristics of high-speed railway. The overall simulation optimization and control are achieved based on an analysis of the dynamics generated by coupled systems in high-speed trains, with a theoretical framework for the dynamics presented in the book. Presents the first book available on the dynamics of coupled systems in high-speed trains Provides a systematic view of high-speed vehicle dynamics, covering the issues that are especially concerned for high speed operations, such as high-speed pantograph and catenary, aerodynamic characteristics and running stability of high-speed trains Covers the optimization of dynamic performance, the design of parameters, the simulation of high-speed train service processes, and the identification of high-speed train state and condition assessment

Aerodynamics and Ventilation of Vehicle Tunnels

Download Aerodynamics and Ventilation of Vehicle Tunnels PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 988 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!


Book Synopsis Aerodynamics and Ventilation of Vehicle Tunnels by : Alex Haerter

Download or read book Aerodynamics and Ventilation of Vehicle Tunnels written by Alex Haerter and published by . This book was released on 1991 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Driving Force of Korea’s Economic Growth Korea’s High-speed Rail Construction and Technology Advances

Download The Driving Force of Korea’s Economic Growth Korea’s High-speed Rail Construction and Technology Advances PDF Online Free

Author :
Publisher : 길잡이미디어
ISBN 13 : 8955036264
Total Pages : 95 pages
Book Rating : 4.9/5 (55 download)

DOWNLOAD NOW!


Book Synopsis The Driving Force of Korea’s Economic Growth Korea’s High-speed Rail Construction and Technology Advances by : The Korea Transport Institute (South Korea)

Download or read book The Driving Force of Korea’s Economic Growth Korea’s High-speed Rail Construction and Technology Advances written by The Korea Transport Institute (South Korea) and published by 길잡이미디어. This book was released on 2014-11-19 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1 Status of Korean Railway Technology Chapter 2 Strategy for Technology Transfer of Korean High-speed Railway 1. Necessity of Technology Transfer 2. Concept of Technology Transfer 3. Scope of Technology Transfer 4. Subject of Technology Transfer 5. Procedures for Technology Transfer 6. Results and Implications of Technology Transfer Chapter 3 Rolling Stock Technology Transfer 1. Before and After Contract Signing 2. Manufacturing, Delivery and Commissioning Phases 3. Technology Transfer Chapter 4 Construction and Civil Work 1. Railway-based Technology Before High-speed Railway Construction 2. Phased Approach to High-speed Railway Technology 3. Securing HSR Track Bed Design Technology 4. Supervision of Track Bed Construction 5. Conclusion Chapter 5 High-speed Railway Track 1. Background 2. Selection of Track Structure and Basic Design 3. Preparation of Construction Specification and Track Material Design 4. Inspection of Material Manufacturing & Production 5. Construction Experience 6. Verification of Completed Structures and Use of Tracks 7. Conclusion Chapter 6 Operation Technology 1. Overview 2. Training and Operation Support Program 3. Estimation of Manpower Required and Depot Completion 4. Commissioning of High-speed Rolling Stock 5. Final Pre-operation 6. Major Results Chapter 7 Conclusion and Implications

Railway Track Allocation

Download Railway Track Allocation PDF Online Free

Author :
Publisher : Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN 13 : 9783838132228
Total Pages : 248 pages
Book Rating : 4.1/5 (322 download)

DOWNLOAD NOW!


Book Synopsis Railway Track Allocation by : Thomas Schlechte

Download or read book Railway Track Allocation written by Thomas Schlechte and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2012-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is about mathematical optimization for the efficient use of railway infrastructure. We address the optimal allocation of the available railway track capacity - the track allocation problem. This track allocation problem is a major challenge for a railway company, independent of whether a free market, a private monopoly, or a public monopoly is given. Planning and operating railway transportation systems is extremely hard due to the combinatorial complexity of the underlying discrete optimization problems, the technical intricacies, and the immense sizes of the problem instances. Mathematical models and optimization techniques can result in huge gains for both railway customers and operators, e.g., in terms of cost reductions or service quality improvements. We tackle this challenge by developing novel mathematical models and associated innovative algorithmic solution methods for large scale instances. This allows us to produce for the first time reliable solutions for a real world instance, i.e., the Simplon corridor in Switzerland.

Introduction to High-Speed Railway

Download Introduction to High-Speed Railway PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 9819964237
Total Pages : 353 pages
Book Rating : 4.8/5 (199 download)

DOWNLOAD NOW!


Book Synopsis Introduction to High-Speed Railway by : Linya Liu

Download or read book Introduction to High-Speed Railway written by Linya Liu and published by Springer Nature. This book was released on 2023-09-28 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of various aspects of high-speed railways, such as infrastructure, communication signals, traction power supply, trainsets, and transportation organization. It delves into the basic concepts, fundamental theories, and the latest technological achievements in these areas, equipping readers with a strong foundation in the subject matter. The content is organized into eight chapters: Introduction, High-Speed Railway Lines and Infrastructure, Power Supply Systems, High-Speed Railway Trainsets, Signal and Communication Systems, Transportation Organization, Passenger Services, and Maglev Railways. Each chapter explores different facets of high-speed railway systems, focusing on the unique characteristics, design principles, and operational methodologies that set them apart from traditional railway systems. The book also highlights recent breakthroughs and innovations in the field, giving readers a glimpse of the future potential of high-speed railways. The book is tailored to meet the needs of undergraduate and graduate students pursuing degrees in railway transportation, railway engineering, locomotive vehicles, electrical traction, signal communication, and related fields. It offers a systematic and in-depth understanding of high-speed railway systems, enabling students to grasp the subject matter and apply their knowledge to real-world situations. It can also be a training material for railway professionals looking to expand their knowledge and skills in high-speed railway systems. Furthermore, the book can be a useful reference for postgraduate students engaged in research in relevant fields. It offers a wealth of information and insights, assisting researchers in understanding the intricacies of high-speed railway systems, and exploring new avenues for innovation and improvement.

High-speed Rail: An Analysis Of The Chinese Innovation System

Download High-speed Rail: An Analysis Of The Chinese Innovation System PDF Online Free

Author :
Publisher : World Scientific
ISBN 13 : 9811206767
Total Pages : 456 pages
Book Rating : 4.8/5 (112 download)

DOWNLOAD NOW!


Book Synopsis High-speed Rail: An Analysis Of The Chinese Innovation System by : Bai Gao

Download or read book High-speed Rail: An Analysis Of The Chinese Innovation System written by Bai Gao and published by World Scientific. This book was released on 2020-12-21 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-speed railway system is interdisciplinary subject that covers infrastructure, mobile equipment, traction power supply, communication signal, operation and maintenance, and transportation organization. The purpose of this book is to give readers a basic understanding of the technology behind of China's high-speed rail network.In this book, the author mainly focusses on the innovations of products and processes, especially product innovation, which involves the selection of technology route, technology system and technology source. Therefore, the innovation in HST here refers to the selection of technology route, technology system and technology source, as well as, the new products developed and manufactured according to the selection. With the in-depth study, the author would like to provide outlook for development in this area in the next stage.

High-speed Rail

Download High-speed Rail PDF Online Free

Author :
Publisher :
ISBN 13 : 9781558442221
Total Pages : 0 pages
Book Rating : 4.4/5 (422 download)

DOWNLOAD NOW!


Book Synopsis High-speed Rail by : Petra Todorovich

Download or read book High-speed Rail written by Petra Todorovich and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Policy Focus Report was a product of the Lincoln Institute of Land Policy, the Regional Plan Association and their joint venture America 2050. The Lincoln Institute of Land Policy has been engaged in a series of projects with the Regional Plan Association for more than a decade. The partnership spawned the national initiative known as America 2050, which is aimed at meeting the infrastructure, economic development and environmental challenges of the nation, in preparation for a population increase of about 130 million by 2050. A major focus of America 2050 is the emergence of megaregions - large networks of metropolitan areas, where most of the population growth by mid-century will take place. Examples of megaregions are the Northeast Megaregion, from Boston to Washington, or Southern California, from Los Angeles to Tijuana, Mexico. High-speed rail is capable of linking employment centers and population hubs in corridors up to 600 miles in length in 11 U.S. megaregions.This Policy Focus Report was a product of the Lincoln Institute of Land Policy, the Regional Plan Association and their joint venture America 2050. The Lincoln Institute of Land Policy has been engaged in a series of projects with the Regional Plan Association for more than a decade. The partnership spawned the national initiative known as America 2050, which is aimed at meeting the infrastructure, economic development and environmental challenges of the nation, in preparation for a population increase of about 130 million by 2050. A major focus of America 2050 is the emergence of megaregions - large networks of metropolitan areas, where most of the population growth by mid-century will take place. Examples of megaregions are the Northeast Megaregion, from Boston to Washington, or Southern California, from Los Angeles to Tijuana, Mexico. High-speed rail is capable of linking employment centers and population hubs in corridors up to 600 miles in length in 11 U.S. megaregions.