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Evaluation of Wheel/Rail Contact Mechanics: Concepts Report

A need exists for a new test rig design with advanced sensing technologies that will allow the railroad industry and regulatory agencies to better understand the wheel-rail contact dynamics and mechanics, especially as it pertains to high-speed rail. Both scaled and full-scale designs are being...

Task Force Report on the M-2 Axle/Bearing Failure Investigation

This investigation of the tubular-axle/roller-bearing failures experienced with M-2 multiple-unit cars of New York's Metropolitan Transportation Authority was aimed at establishing failure mechanisms, assessing the effectiveness of interim and long-term countermeasures, and determining if the risk...

Train-to-Train Rear End Impact Tests Volume II: Impact Test Summaries

This final report documents these nine tests. Volume I, Pre-Impact Determination of Vehicle Properties, summarizes the vehicle properties obtained prior to the impact tests. These vehicle properties were used in computer simulation of the impact tests and included weights, pitch moments of inertia...

Safety Aspects of New and Untried Freight Cars

Recent research efforts sponsored by the Federal Railroad Administration (FRA) will lead to the development of safety criteria for critical parameters of rail vehicles. Suggested test requirements and limits by which to evaluate the dynamic performance of new vehicles have also been formulated as a...

Safety Manual for FRA Survey Vehicles

The safety rules set forth in this manual govern all FRA Survey Vehicles operated by Ensco, Inc. under contract DOT-FR53-80-C-00015. In addition, these safety rules provide guidelines for all ENSCO employees, FRA personnel, and all other personnel working on or visiting the survey vehicles. This...