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Railroad Car Coupling Shock, Vertical Motion, and Roller Bearing Temperature

Data were collected in a study of railroad car operating environment. Measurements were made on wheel bearing operating temperatures, coupling impact shock, and vertical motion of the car due to rail travel. Tests were conducted using an instrumented consist at the Transportation Test Center (TTC)...

High Cant Deficiency Test of the F40PH Locomotive and the Prototype Banking Amcoach

Increasing the speed of passenger trains in existing curves has been proposed as an alternative to changing curve radii for the purpose of reducing trip times on the Northeast Corridor. Tests were performed on the F40PH diesel-electric locomotive and an Amcoach modified for banking, with and...

Structure and Properties of Thermite Welds in Premium Rails

Thermite welds were used to join combinations of premium rails and AREA Controlled Cooled Carbon rails (i.e., standard rails). The premium rails comprised head-hardened rails and CrMo, CrV and Cr alloy rails. A major objective was to determine the feasibility of joining premium rails to each other...

Control of Wheel/Rail Noise and Vibration

This report presents the results of a program to develop and evaluate techniques for the control of wheel/rail noise in urban rail transit systems. The first part of the program included a literature review and a cost-benefit analysis to select, for further study, the most cost-effective wheel/rail...

Management of Urban Construction Programs Volume II: Supplemental Information

This report is part of a program sponsored by the Office of Rail and Construction Technology of the Urban Mass Transportation Administration. The overall objective of the study is to develop guidelines that can be used by local government authorities, such as transportation, water, and sanitation...

Safety of Vital Control and Communication Systems in Guided Ground Transportation. Analysis of Railroad Signaling System: Microprocessor Interlocking

The study has been conducted with the goal of gaining an insight into the issues of maintaining vital signal systems implemented with microprocessor chips and of making field changes to the application of such systems. To relate these abstract topics to concrete issues, two actual commercial...

Study of Braking Operations Using a Locomotive Simulator

The Volpe Center is currently supporting the Federal Railroad Administration in developing revisions to the safety standards for train air brakes. As part of the program, one of the tasks was to evaluate the effects certain operating parameters have on the performance and response of braking...

Experimental Residual Stress Measurement of New and Used Commuter Rail Wheels

The report outlines the procedures used and presents the data obtained during the wheel saw-cutting portion of the Cracked Wheel Investigation. The purpose of the wheel saw cutting experiment was to determine the magnitude and direction of the residual stresses in a new, as well as a service-worn...

Safety of High Speed Guided Ground Transportation Systems: Review of Existing EMF Guidelines, Standards and Regulations.

To assess the state of knowledge about anticipated electric and magnetic field (EMF) exposures from electrical transportation systems, including electrically powered rail and magnetically levitated (maglev), research concerning biological effects of EMF exposure, with special emphasis on broad...

Evaluation of Immediate Actions Taken to Deal with Cracking Problems Observed in Wheels of Rail Commuter Cars.

The report is the first in a series of engineering studies on railroad vehicle wheel performance. Preliminary studies are summarized, involving evaluation of actions taken to respond to high rates of crack occurrence observed in the wheels of certain multiple unit (MU) power cars used in commuter...

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