Technical Reports

Analytic Studies of the Relationship Between Track Geometry Variations and Derailment Potential at Low Speeds

This report describes analytical studies carried out to define the relationship between track parameters and safety from derailment. Problematic track scenarios are identified reflecting known accident data. Vehicle response is investigated in the 10-25 mph speed range, using an analytic model of a...

A Model for Evaluating the Costs and Benefits of Railroad Electrification, Volume I - Model Description and Application

A model has been developed to evaluate the economic benefits of large scale railroad electrification. Site specific factors which have a major impact on the rate-of-returns are included as input data, thus providing a procedure for comparing the economics of individual routes in a uniform and...

User's Manual for Program CONWHEEL (CONformal WHEEL-rail Contact Stress Problems): Technical Report No.10

CONWHEEL (CONformal WHEEL-rail contact stress problems) is an all FORTRAN computer program for the solution of normal contact stresses between two closely conforming (possibly nonHertzian) smooth elastic bodies. It can be used to determine: the boundary of the interface contact region; pressure...

User's Guide for a Computerized Track Maintenance Simulation Cost Methodology

This User s Guide describes the simulation cost modeling technique developed for costing of maintenance operations or track and its component structures. The procedure discussed provides for separate maintenance cost entries to be associated with definable track substructures such as rail, cross...

Truck Design Optimization Project (TDOP) Phase II: Final Report

The overall objectives of the TDOP Phase II are to provide technological and economic bases for assessing freight car truck performance and design, and to generate uniform testing and performance guidelines for truck/carbody systems. This report summarizes the approaches employed in this study...

Track Component Property Tests Volume II: Rails, Ties, Joint Bars and Fasteners

This report describes the test procedures and results from a series of tests on the physical properties of concrete ties, rails, joint bars and rail fasteners, conducted at the Association of American Railroad's Track Research Laboratory in Chicago, Illinois. The properties investigated were:...

Summary of Accidents Investigated by the Federal Railroad Administration: Calendar Year 1980

[From the Introduction] The 1980 Summary of Accidents Investigated by the Federal Railroad Administration (FRA) includes 130 railroad accidents. This summary provides the following information: the railroad(s) involved, the location and time of the accident, the type of railroad accident, the...

Study of Fire Extinguishment of a Replacement Fluid for Use in Transformers in Lieu of Askarel

A series of tests were performed at the Factory Mutual Test Center 1) to obtain information on the performance of various extinguishing agents used with hand-held fire extinguishers to control fire involving a Midel, a transformer fluid for replacement of Askarel, and 2) to compare the results with...

Railroad Electrification Activity: A Summary Report, 1980-1981

This report reviews the status of railway electrification in North America and selected countries worldwide, for the period June, 1980 through June, 1981. Included in the report are updates on the extent of construction of electrification; research completed on feasibility studies and technical...

Radial Axle Truck Test Results Report

This report describes the performance tests conducted on a pair of prototype radial axle trucks developed by GSI. The trucks tested were purchased from GSI by Amtrak and tested by FRA as a joint FRA/Amtrak project. The results of this test show that, as configured for this test, the trucks...

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Technical Reports