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Federal Railroad Administration

rosaP Repository & Open Science Access Portal

The Federal Railroad Administration (FRA) promotes safe and environmentally sound rail transportation. The FRA conducts research and development tests to evaluate projects in support of its safety mission and to enhance the railroad system as a national transportation resource. Public education campaigns on highway-rail grade crossing safety and the danger of trespassing on rail property are also administered by FRA. Bookmark this collection https://rosap.ntl.bts.gov/collection_fra or https://doi.org/10.21949/1530835.

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Showing 1061 - 1080 of 1162 results
  • Puncture Resistance of Scale Model Aluminum Tank Car Heads
    Puncture Resistance of Scale Model Aluminum Tank Car Heads
    Lishaa, M. A. ;
    Dia, C. C.
    1987-06-01 | PDF
    In the study of the coupler-tank car head impact phenomena in derailment and switchyard operations, different test conditions have to be considered. In order to correlate the threshold puncture velocity with these conditions, many impact tests need to be performed to obtain the required information. For these studies, a small-scale model testing pr ...
  • Railhighway crossing accident prediction analysis
    Rail-highway crossing accident prediction analysis
    Chhatwal, R. ;
    Mengert, Peter
    1987-04-01 | PDF
    This report contains technical results that have been produced in a studyto revise and update the DOT rail-highway crossing resource allocationprocedure. This work has resulted in new accident prediction and severityformulas, a modified and extended resource allocation model, and more flexibleand more complete software. The new accident and severit ...
  • Overview the FAST Lubrication Study
    Overview: the FAST Lubrication Study
    Reiff, R P
    1986-09-01 | PDF
    From October 1983 to November 1984, a lubrication study funded by the Federal Railroad Administration was conducted by the Association of American Railroads at the Facility for Accelerated Service Testing (FAST) at the Transportation Test Center in Pueblo, Colorado. The FAST Lubrication Study involved: Wayside Lubricator Pumps - Five designs tested ...
  • An Experimental Investigation of the Discharge of a Flashing Liquid From a Finite Reservoir A Fundamental Study of the TwoPhase Flow Phenomena Occurring During Venting From Rail Tank Cars
    An Experimental Investigation of the Discharge of a Flashing Liquid From a Finite Reservoir: A Fundamental Study of the Two-Phase Flow Phenomena Occurring During Venting From Rail Tank Cars
    Rod, S. R. ;
    Guhler, M.
    1985-01-01 | PDF
    The design of pressure relief valves for railroad tank cars containing pressurized liquid commodities is dependent on knowledge of venting rates during accidents. In turn, development of an appropriate theoretical model requires knowledge of many properties which affect the venting rates of vapor, liquid and two-phase mixtures. Previous reports and ...
  • Event probabilities and impact zones for hazardous materials accidents on railroads
    Event probabilities and impact zones for hazardous materials accidents on railroads
    Nayak, P.R. ;
    Rosenfield, D.B.
    1983-11-01 | PDF
    Procedures are presented for evaluating the probability and impacts of hazardous material accidents in rail transportation. The significance of track class for accident frequencies and of train speed for accident severity is quantified. Special attention is given to the analysis of track-caused accidents. Quantitative estimates are provided of the ...
  • Analytical Studies of the Relationship Between Track Geometry Variations and Derailment Potential at Low Speeds
    Analytical Studies of the Relationship Between Track Geometry Variations and Derailment Potential at Low Speeds
    Blader, F. B.
    1983-09-01 | PDF
    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 freight vehicle to identify critical values of bod ...
  • Analysis of Lateral Rail Restraint
    Analysis of Lateral Rail Restraint.
    Jeong, David Y. ;
    Coltman, Michael
    1983-09-01 | PDF
    This report deals with the analysis of lateral rail strength using the results of experimental investigations and a nonlinear rail response model. Part of the analysis involves the parametric study of the influence of track parameters on lateral rail restraint. These parameters include rail size, rail support characteristics, and wheel versus truck ...
  • Ballast and Subgrade requirements study railroad track substructure design and performance evaluation practices
    Ballast and Subgrade requirements study : railroad track substructure - design and performance evaluation practices
    DiPilato, M.A. ;
    Levergood, A.V.
    1983-06-30 | PDF
    Earth materials--i.e., soil and rock--form the substructure (ballast, subballast, and subgrade) of all railroad track. In this report, the most suitable technology and design criteria as related to design of the substructure are identified based on a review of current track substructure design procedures employed in the United States and foreign co ...
  • Task force report on the M2 axlebearing failure investigation
    Task force report on the M-2 axle/bearing failure investigation.
    John A. Volpe National Transportation Systems Center (U.S.)
    1983-01-31 | PDF
    This investigation of the tubular-axle/roller-bearing failures experienced with M-2 multiple-unit cars of New York's Metropolitan Transportation Authority was aimed at establishing failure mechanisms, assessing the effectiveness of interim and long-term countermeasures, and determining if the risk of such failures exists on other fleets of similar ...
  • Truck Design Optimization Project TDOP Phase II Final Report
    Truck Design Optimization Project (TDOP) Phase II: Final Report
    RamaChandran, P V ;
    ElMadany, M M
    1982-02-01 | PDF
    The overall objectives of the Truck Design Optimization (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/car body systems. This report summarizes the approaches employed in this study which included the develop ...
  • Handbook for the Measurement Analysis and Abatement of Railroad Noise
    Handbook for the Measurement, Analysis and Abatement of Railroad Noise
    Stusnick, Eric ;
    Montroll, M L
    1982-01-01 | PDF
    This handbook gathers together in one place the necessary background material, the required measurement and analysis procedures, and the currently available abatement techniques to respond to and meet current railroad noise regulations. The first chapter of the handbook briefly describes its development, arrangement, and suggested use. The second c ...
  • FAST Engineering Conference 1981 Proceedings
    FAST Engineering Conference - 1981 Proceedings
    United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development
    1982-01-01 | PDF
    This report constitutes the proceedings of the two-day Facility for Accelerated Service Testing (FAST) Engineering Conference held at the Stouffers Inn Convention Center, Denver, Colorado on November 4-5, 1981. Conference papers were presented by representatives of the Federal Railroad Administration, the Association of American Railroads, and Boei ...
  • Engineering data characterizing the fleet of US railway rolling stock Volume 2 methodology and data
    Engineering data characterizing the fleet of U.S. railway rolling stock. Volume 2 : methodology and data
    Przybylinski, P G ;
    Anderson, G B
    1981-11-01 | PDF
    This report contains engineering parameter descriptions of major and distinctive freight vehicle configurations covering approximately 96% of the U.S. freight vehicle fleet. This data has been developed primarily for use in analytical simulation modeling of rail vehicles to analyses of vehicle/track dynamic interaction dynamics. To characterize loa ...
  • Truck Design Optimization Project TDOP Phase II Guideline Test Specifications for Freight Car Trucks
    Truck Design Optimization Project (TDOP) Phase II: Guideline Test Specifications for Freight Car Trucks
    RamaChandran, P V ;
    ElMadany, M M
    1981-09-01 | PDF
    Under the Federal Railroad Administration-sponsored Truck Design Optimization Project Phase II, a set of standard test specifications were developed to evaluate and characterize the performance of Type I (standard) and Type II (premium) freight car truck configurations. The test specifications provide guidelines for the conducting, acquisition, and ...
  • Railroad Classification Yard Technology Manual Volume II Yard Computer Systems
    Railroad Classification Yard Technology Manual: Volume II : Yard Computer Systems
    Savage, N.P. ;
    Tuan, P. L.
    1981-08-01 | PDF
    This volume (Volume II) of the Railroad Classification Yard Technology Manual documents the railroad classification yard computer systems methodology. The subjects covered are: functional description of process control and inventory computer systems, development of computer system requirements, economic analysis, and computer systems acquisition, i ...
  • Railroad Classification Yard Technology Computer System Methodology Case Study Potomac Yard
    Railroad Classification Yard Technology: Computer System Methodology: Case Study: Potomac Yard
    Savage, N.P. ;
    Hackworth, M.A.
    1981-08-01 | PDF
    This report documents the application of the railroad classification yard computer system methodology to Potomac Yard of the Richmond, Fredericksburg, and Potomac Railroad Company (RF&P). This case study entailed evaluation of the yard traffic capacity, development of computer systems requirements, analysis of alternative hardware configurations, a ...
  • Truck Design Optimization Project TDOP Phase II Performance Specification for Type II Freight Car Trucks
    Truck Design Optimization Project (TDOP) Phase II: Performance Specification for Type II Freight Car Trucks
    RamaChandran, P V ;
    ElMadany, M M
    1981-08-01 | PDF
    One of the important goals of the Truck Design Optimization Project (TDOP) Phase II is to provide the railroad industry with a basis for performance specifications for the new generation (Type II) freight car trucks. This report sets forth such a quantitative basis as supported by available field test data. The quantified performance characterizati ...
  • Truck Design Optimization Project TDOP Phase II Wear Data Collection Program Report
    Truck Design Optimization Project (TDOP) Phase II: Wear Data Collection Program Report
    Bakken, G ;
    Jones, C W
    1981-08-01 | PDF
    This program is part of the field studies conducted during the TDOP Phase II Project. TDOP is designed to examine the performance of various freight car truck designs with the objective of improving the efficiency and productivity of rail freight transportation. Maintenance and repair costs of truck components constitute an important factor in the ...
  • Railroad Classification Yard Technology Manual Volume III Freight Car Rollability
    Railroad Classification Yard Technology Manual. Volume III. Freight Car Rollability
    Wong, P. J. ;
    Stock, W. A.
    1981-07-01 | PDF
    The report presents a survey of rolling resistance research, histograms of rolling resistance from five yards, a statistical regression analysis of causal factors affecting rolling resistance, procedures for constructing a rolling resistance histogram at a new yard, and an analysis of errors in the measurement of rolling resistance.
  • Advanced proceedings of the second classification yard technology workshop
    Advanced proceedings of the second classification yard technology workshop
    United States. Federal Railroad Administration  ...
    1981-05-01 | PDF
    The purpose of this workshop was to present recent developments in yard related research along with discussing problem areas deserving further research. Also, railroad representatives will present reports on recently completed yard projects especially focusing on design areas of improvement and innovation.
1061 - 1080 / 1162