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TCRP report 155 provides guidelines and descriptions for the design of various common types of light rail transit (LRT) track. The track structure types include ballasted track, direct fixation ("ballastless") track, and embedded track. The report considers the characteristics and interfaces of vehicle wheels and rail, tracks and wheel gauges, rail sections, alignments, speeds, and track moduli. The report includes chapters on vehicles, alignment, track structures, track components, special track work, aerial structures/bridges, corrosion control, noise and vibration, signals, traction power, and the integration of LRT track into urban streets.
A proper quality of a track and other infrastructure objects represents a basic requirement for train safety and punctuality. Most of the physical systems and their components deteriorate over time. This affects performance and may lead to failures. Albert Einstein said, “You have to learn the rules of the game. And then you have to play better than anyone else.” Only if we understand how the whole system works, taking into account its imperfections and how they influence its quality and performance will we be able to learn the rules of the game and “play better.” The book provides the readers with the necessary functional knowledge of track behaviour and comprehensively covers the function of the various track components, their interaction as elements of the track system, as well as the interaction of the track with railway vehicles. By presenting important tools for a deep understanding of track-behaviour this book aims to be a reference guide for infrastructure managers and to help them to find ways improving track quality for optimum long-term behaviour.
This book focuses on selected research problems of contemporary railways. The first chapter is devoted to the prediction of railways development in the nearest future. The second chapter discusses safety and security problems in general, precisely from the system point of view. In the third chapter, both the general approach and a particular case study of a critical incident with regard to railway safety are presented. In the fourth chapter, the question of railway infrastructure studies is presented, which is devoted to track superstructure. In the fifth chapter, the modern system for the technical condition monitoring of railway tracks is discussed. The compact on-board sensing device is presented. The last chapter focuses on modeling railway vehicle dynamics using numerical simulation, where the dynamical models are exploited.
For most of the 19th and much of the 20th centuries, railroads dominated American transportation. They transformed life and captured the imagination. Yet by 1907 railroads had also become the largest cause of violent death in the country, that year claiming the lives of nearly twelve thousand passengers, workers, and others. In Death Rode the Rails Mark Aldrich explores the evolution of railroad safety in the United States by examining a variety of incidents: spectacular train wrecks, smaller accidents in shops and yards that devastated the lives of workers and their families, and the deaths of thousands of women and children killed while walking on or crossing the street-grade tracks. The evolution of railroad safety, Aldrich argues, involved the interplay of market forces, science and technology, and legal and public pressures. He considers the railroad as a system in its entirety: operational realities, technical constraints, economic history, internal politics, and labor management. Aldrich shows that economics initially encouraged American carriers to build and operate cheap and dangerous lines. Only over time did the trade-off between safety and output—shaped by labor markets and public policy—motivate carriers to develop technological improvements that enhanced both productivity and safety. A fascinating account of one of America's most important industries and its dangers, Death Rode the Rails will appeal to scholars of economics and the history of transportation, technology, labor, regulation, safety, and business, as well as to railroad enthusiasts.