Technical Reports

Improved Quality Truck Castings

A review of the car repair billing database shows that many bolsters and side frames are removed from service each year due to cracking or breaking. Derailment-related costs due to bolster and side frame failures total approximately $9 million per year. Although the number of removals may not be...

Characterization of Relatively Large Track Geometry Variations

An analysis of existing track geometry data is described from which the signatures of key track geometry variations related to severe track-train dynamic interaction are identified and quantified. Mathematical representations of these signatures are defined and presented. Track geometry descriptors...

Analysis of the Behavioral Relationships of Railroad Track Maintenance Spending

This report summarizes the activities and results of the research effort on Class I railroads operating in 1978 and between 1962 and 1977. Five tasks have been presented as follows: Cl) industry interviews, (2) hypothesis development, (3) data acquisition, (4) model development, and (5) forecast...

Analysis of Railroad Track Maintenance Expenditures for Class I Railroads 1962-1977

This study investigates the decision-making process for railroad track maintenance (T/M) expenditures. The objectives are to (1) describe how Federal track safety standards have influenced this process and (2) try to predict the impact of changes in safety regulations on T/M spending for all U.S....

Analysis of Locomotive Cabs

This report covers research that was performed to investigate the present crashworthiness state of in-service locomotives and design applications for new locomotives to protect occupants from serious or fatal injury during collision conditions. The tasks that were performed are: (1) identify past...

A Demonstration Project for Locomotive Engineer Training

This report presents the findings of the joint venture demonstration training project conducted by the Louisville & Nashville Railroad and the Brotherhood of Locomotive Engineers. Volume I contains a survey of the literature, a job task inventory and a set of guidelines for instructional...

Vibration Testing of Railroad Tank Car Specimens

Vibration tests of fireproof coatings were performed on test specimens measuring 4 feet square. Specimens were simulations of railroad tank car side- wall panels. Samples of fireproof coatings from three different manufacturers were tested. The vibration test consisted of application of a...

Vibration Test Requirements for a 70 Ton Boxcar: Revision 1

The Federal Railroad Administration is to perform a parallel effort of test and analysis of a 70 ton boxcar configuration. The program objectives are to develop and demonstrate a validation procedure, to provide an analytic capability of predicting accurate over-the-road boxcar response...

Vibration Level Data: Brighton-New York City Transit Authority

This report documents the results of a vibration measurement program conducted on 14-15 August 1980 in the Midwood Section of Brooklyn, New York, next to the tracks of the Brighton Line of the New York City Transit Authority. The test was conducted by the Transportation Systems Center (TSC) for the...

User's Manual for FRATX1 and FRATF1 Freight Car Dynamic Analysis Computer Programs

This is a user’s manual for two versions of a computer program to calculate the dynamic response of freight cars to track inputs. The basic program is nonlinear, written in FORTRAN for Control Data Corporation (CDC) computers with solution in the time domain by numerical integration methods. The...

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Technical Reports