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Methods for detecting and quantifying the levels of inductive electromagnetic interference produced by solid state rapid transit propulsion equipment and the susceptibility of audio-frequency signaling systems to these emissions are presented. These methods include procedures for taking...
A methodology is described, based on a study conducted on the Massachusetts Bay Transit Authority Blue, Red and Orange Lines, to assess the acoustic noise climate of an urban rail transit system and the appropriate technology to cost - effectively reduce that climate to acceptable levels. The...
Results of electromagnetic emission measurements performed on an AEM-7 at the Transportation Test Center near Pueblo, Colorado, are presented. A brief description of teh measurements and methodology employed is included.
This report presents a suggested test procedure for measuring the radiated electromagnetic interference emanating from rail transit vehicles with electric propulsion. Testing rail transit vehicles for EMI poses unique problems not covered by existing EMI testing standards such as the MIL-STD's. The...
This test evaluated the quasi-static method for demonstrating energy absorption and graceful deformation as outlined in the notice of proposed rulemaking for front-end strength of cab cars and multiple unit locomotives. The quasi-static tests were successful and were executed as planned. Minor...
A proof of concept demonstration was conducted on two curves to demonstrate the effectiveness of wayside based top of rail (TOR) friction control in reducing occurrence and growth rate of rolling contact fatigue (RCF) on low curvature railroad track. Benefits were primarily noticed on the low rail...
This report describes the work conducted over the past two decades on rail integrity research sponsored by the Federal Railroad Administration (FRA) and carried out by the Volpe National Transportation Systems Center. The research has involved both experimental and analytical studies on the subject...
Alarm performance tests of a ballast movement detector manufactured by Picton Technologies were performed by Transportation Technology Center, Inc. Tests were carried out at the Federal Railroad Administration's (FRA) Transportation Technology Center (TTC), Pueblo, Colorado, under the Facility for...
A full-scale passenger train-to-freight train impact test was performed on January 31, 2002 at the Transportation Technology Center, Pueblo, Colorado. The actual speed of impact, as measured by the laser speed trap, was 29.9 mph resulting in a large amount of damage to the leading cab-car, which...
A full-scale passenger train-to-freight train impact test was performed on January 31, 2002 at the Transportation Technology Center, Pueblo, Colorado. The actual speed of impact, as measured by the laser speed trap, was 29.9 mph (i.e., within .3% of the desired speed of 30 mph) resulting in a large...