Technical Reports

1985 Track Survey: National Railroad Passenger Corporation (Amtrak)

From September through December 1984, the FRA conducted an intensive survey of all mainline track utilized by Amtrak (see fig. 1). Three automated track geometry railcars -- the latest in railroad state-of-the-art inspection technology -- measured track gage, cross level, wrap, profile, alignment...

Wood Tie Track Resistance Characterization and Correlations Study

The work presented here is part of a major program to evaluate lateral buckling of continuous welded rail (CUR) tracks. The program to develop the technical information to support safety guidelines and specifications for track buckling prevention is being directed by the Volpe National...

An Investigation of Passing Stop Signals at a Passenger Railroad

This report documents the findings and recommendations from an investigation into stop signal violations at an American passenger railroad. The investigation was requested by the Federal Railroad Administration (FRA) and the passenger railroad, and sponsored by FRA’s Office of Research &...

Advance proceedings of the second classification yard technology workshop

This workshop was held in St, Louis Missouri on May 6-7, 1981. Sessions at the workshop included: Yard Technology Research, Selected Areas of Implemented Yard Designs, and Problem Areas in Yard Design that Require Technological Solutions.

An Industry Perspective on Maglev

Most of the recent discussion and proposed legislation concerning Maglev assumes that U.S. industry has a strong interest in Maglev and will be willling to take a proactive, costsharing role in the development of Maglev systems. As part of the preliminary feasibility studies on Maglev, the Federal...

Evaluation of a Top-of-Rail Lubrication System

This report documents the testing of a top of the rail lubricant applied in computer-controlled quantities. This system, the SENTRAEN 2000™, was developed by Tranergy. The testing was carried out over CSXT operated track between Corbin, KY and Cartersville, GA on various train runs from February...

Safety Evaluation of TSM Prototype Electronically Controlled Pneumatic Train Brake System on Brake Rack

Performance standards for Electronically Controlled Pneumatic (ECP) freight brake systems for use on the North American railroads are being developed by working groups composed of personnel from the railroad industry, the railroad supply industry, and AAR technical staff. Draft specifications (S-...

Experimental 3-D Residual Stress Measurement in Rails via Thermal Annealing

This report describes a novel method to determine three-dimensional (3-D) residual stresses in railroad rails. The method uses Moire and Twyman/Green interferometry to measure the deformation of rail slices during a stress relief process which is accomplished by thermal annealing (heat treatment...

Fire Safety of Passenger Trains Phase I: Material Evaluation (Cone Calorimeter)

As part of the passenger equipment rulemaking required by Congress, the Federal Railroad Administration (FRA) has proposed that its existing fire safety guidelines be made mandatory. A major conclusion of a FRA-funded 1993 study by the National Institute of Standards and Technology (NIST) was...

Rail Vehicle Crashworthiness Symposium

This document contains the proceedings of the Rail Vehicle Crashworthiness Symposium held at the Volpe Center in Cambridge, Massachusetts on June 24, 25, and 26, 1996. These proceedings have been developed from a transcript of the symposium and the material used by the presenters at the...

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Technical Reports