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This report documents two separate studies aimed at verifying and demonstrating the capabilities of the Roll Dynamics Unit (RDU). The RDU is part of the Rail Dynamics Laboratory (RDL), located at the Transportation Test Center (TTC). in Pueblo, Colorado. During testing, the RDU's potential for...
This report presents the test results of SENTRAEN 2000™, a new top-of-rail lubrication system developed by Tanergy Corporation. The system was evaluated the week of June 2, 1997, at the Federal Railroad Administration's Transportation Technology Center (TTC) near Pueblo, Colorado. The concept of...
A history of the UMTA Rail Transit Electromagnetic Interference and Electromagnetic Compatibility program, together with a listing of significant achievements over the life of the program, is presented. This is the lead volume of a nin volume set dealing with the theory, problems and solutions of...
This report describes the efforts of Japanese transit industry- manufacturers and transit operators- in the area of advanced propulsion systems for urban rail vehicles. It presents different chopper system designs, new ac drive developments, various commercial frequency and audio frequency...
This Directory contains brief descriptions of Technical Assistance and Safety Projects initiated during Fiscal Year 1989 by the Office of Technical Assistance and Safety (UTS), Urban Mass Transportation Administration (UMTA) of the U.S. Department of Transportation. Its purpose is to inform the...
Analyses were performed by Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads, to determine if the changes made to Chapter 49 of the Code of Federal Regulations under docket HM-181 for the selection pressure relief valves used on tank cars transporting...
This report documents the results of the controlled testing conducted during the first phase of a tank car operating environment program involving the AAR, the Railway Supply Institute, the FRA, and Transport Canada. Strain gages, accelerometers, and an instrumented couple were installed on a stub...
An evaluation of nondestructive evaluation (NDE) methods, authorized for use in replacing the current hydrostatic pressure test for qualification or re-qualification of railroad tank cars, has been performed by the Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of...
Volpe National Transportation Systems Center (VNTSC) has created a model to predict, among other things, panel shift behavior of track structure. A series of tests was performed in October 1998 by Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of American Railroads,...
The Federal Railroad Administration (FRA) has been investigating incidents of fatigue cracking of the stub sill and at the attachment of the stub sill to the tank shell of stub sill type tank cars. Over 162,000 of these cars have been placed in service since 1950. The FRA has also issued Emergency...