General

The Wear Behavior of High Rails Tested in the First Metallurgy Experiment, 0 to 135 MGT

In the first rail metallurgy experiment, covering the period from September 1976 to September 1977, 135 million gross tons (MGT) of traffic were accumulated on the Facility for Accelerated Service Testing (FAST) track under two widely different lubrication regimes. The first regime of poor...

The Effect of Service Loading on the Bending Strength of Concrete Ties

Concrete tie bending strength tests were conducted by Battelle-Columbus Laboratories at Columbus, Ohio, as part of the Tie and Fastener Verification Studies contract (DOT-FRA-1652) sponsored by the FRA Office of Rail Safety Research. The object of the testing was to determine the effects of service...

Testing a New Method of Railroad Data Transmission

Commonwealth Research Corporation developed the concept of an onboard diagnostic system for monitoring railroad-car fault conditions. It consists of onboard sensors and onboard radiofrequency transmitters to telemeter data to receivers monitored by train-operating personnel. This report describes a...

Technical and Economic Feasibility Study of At-Grade Concrete Slab Track for Urban Rail Transit Systems

This report was prepared as part of an ongoing research effort by the Transportation Systems Center in support of the Urban Mass Transportation Administration of the U.S. Department of Transportation to investigate improved track support systems. The report presents work conducted to evaluate the...

Summary of Accidents Investigated by the Federal Railroad Administration Calendar Year 1979

[From the Introduction] The 1979 Summary of Accidents Investigated by the Federal Railroad Administration (FRA) includes 173 railroad accidents. This report provides the following essential information: the railroad(s) involved, the location and time of the accident, the method of operation and...

Single Axle and Articulated-Supporting Truck Test Results Report

This report presents the results of a project designed to quantify the service performance characteristics of two types of trucks. The first truck treated is essentially a conventional three-piece freight car truck supporting the articulated connector of a multi-unit prototype intermodal railcar....

Review and Summary of Computer Programs for Railway Vehicle Dynamics

To assess the state of development of computer programs which apply to the dynamics of rail vehicles, reviews were prepared of programs in six different categories: lateral stability, curving dynamics, wheel/rail contact, freight vehicle dynamics, analog hybrid simulation, and train dynamics. In...

Resistance of a Freight Train to Forward Motion - Volume IV, Users' Manual for Freight Train Fuel Consumption Program

This document provides information concerning a computer program devised to predict fuel consumption of a freight train operated over a track with known characteristics. The information is of value to both the user who wants merely to utilize the capabilities of the program and the programmers who...

Freight Train Fuel Consumption: Economic Analysis and Correlation of Predictions with Field Data

This final report is a supplement to two earlier FRA reports on train resistance and its impact upon fuel consumption. The portion of this effort reported herein was partly directed toward detailed correlation of predictions of fuel consumption from simulated runs with actual field measurement. In...

Recommendations for Research and Development on Advanced Railroad Braking and Coupling Systems

This report presents a set of recommendations for a research and development program on advanced railroad braking and coupling systems. Programs are developed for the following four systems: 1) a brake condition monitor, 2) a hybrid electropneumatic brake operating valve, 3) a multi-purpose...

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General