General

Roll Dynamics Unit Dynamometer Evaluation Test Using a GP4-02 Locomotive

This report describes evaluative testing of the Roll Dynamics Unit (RDU) at the Transportation Test Center near Pueblo, Colorado. Previous uses of the RDU had been limited to short braking tests, truck stability tests and the transient absorption of power from a transit car. The Dynamometer tests...

Review of Available Vehicle Tracking Systems for Use at the Transportation Technology Center

Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of American Railroads (AAR), performed a review of currently available Vehicle Tracking System (VTS) technologies and their applicability to operations at the Federal Railroad Administration's Transportation Technology...

Review and Evaluation of Track Designs for Joint High Speed Rail and Heavy Freight Operations

An increasing number of railway track segments in the U. S. will soon be required to carry both high-speed passenger and heavy freight traffic. In some cases, conventional track structures (i.e., ballasted crosstie tracks) may not be adequate for both types of service. They may not be capable of...

Recommended Practices for Rail Transit Intra-System Electromagnetic Compatibility of Vehicular Electrical Power and Track Circuit Signaling Subsystems : Volume I: Inductive Recommended Practices

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...

Rapid Transit Noise Abatement and Cost Requirements (MBTA Pilot Study)

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...

Railroad Electromagnetic Compatibility: Locomotive- Volume III : Summary of AEM-7 Electromagnetic Emission Measurements

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.

Radiated Interference in Rapid Transit Systems- Volume II: Suggest Test Procedures

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...

Quasi-Static Test on a State-of-the-Art Collision Post and End Post Assembly

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...

Proof-of-Concept Demonstration: Controlling Rolling Contact Fatigue with Top of Rail Friction Control

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...

Progress in Rail Integrity Research

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...

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General