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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 1141 - 1160 of 1196 results
  • Electromagnetic Interference Impact on Railroad Classification Yards
    Electromagnetic Interference Impact on Railroad Classification Yards
    Cracker, William F ;
    Speh, Paul E
    1978-04-01 | PDF
    The electromagnetic environment in classification yards has become more complex due to the widespread application of electrical and electronic systems and is characterized by the transients of collapsing electrical fields of heavy equipment such as switch machines, retarders and traction equipment. Such noise levels affect the low level signals use ...
  • Aerodynamic Forces on Freight Trains Volume IIFullScale Aerodynamic Validation Tests of Traileronaflat Car Series II
    Aerodynamic Forces on Freight Trains Volume II–Full-Scale Aerodynamic Validation Tests of Trailer-on-a-flat Car (Series II)
    Joshi, Prakash B
    1978-03-01 | PDF
    Aerodynamic forces were measured on full-scale Trailer-on-a-Flat Car (TOFC) configurations and a reliable data base was established for validation of wind tunnel test programs. The drag, side and lift forces were determined on two trailers mounted on an instrumented flat car, each by means of a specially designed force-balance system. Two TOFC conf ...
  • Freight Car Truck Design Optimization Vol I Executive Summary
    Freight Car Truck Design Optimization: Vol. I - Executive Summary
    Fay, G R ;
    Bang, A J
    1978-02-01 | PDF
    This report has been prepared by the FRA as an overview of work accomplished by the Southern Pacific Transportation Company for FRA. It represents the first of a six-volume published set. The other five volumes are listed at the end of this Abstract. The primary objective of TDOP Phase I was to evaluate the dynamic performance of the conventional t ...
  • Parametric study of track response
    Parametric study of track response
    Prause, Robert H. ;
    Kennedy, James C.
    1977-12-01 | PDF
    This report was prepared as part of the Improved Track Structures Research Programmanaged by the Transportation Systems Center. This program is sponsored by theOffice of Rail Safety Research, Improved Track Structures Research Division, ofthe Federal Railroad Administration. The report presents results from a parametricstudy of track response using ...
  • Fracture resistance and fatigue crack growth characteristics of railroad wheels and axles
    Fracture resistance and fatigue crack growth characteristics of railroad wheels and axles
    Carter, C. S. ;
    Caton, R. G.
    1977-11-30 | PDF
    The effects of chemical composition, temperature and loading rates on the plane strain fracture toughness K sub I sub c of railroad wheels have been determined. Similarly, the effects of these variables were determined for grade U and F railroads axles. The carbon content was determined to be the principal factor controlling K sub I sub c. Sensitiv ...
  • Improved Railroad Operations Using a Railroad Automated Identification and Location System Volume 1 New Procedures for Tactical Operating Planning Decisions
    Improved Railroad Operations Using a Railroad Automated Identification and Location System. Volume 1. New Procedures for Tactical Operating Planning Decisions
    Wong, P. J. ;
    Conrad, B
    1977-10-01 | PDF
    This volume documents the new tactical operations planning procedures developed to interface with the Grand Trunk's Railroad Automation Identification and Location System (RAILS). The tactical planning procedures for dispatching and yard management are described in detail, and the results of on-line experiments are presented. (Portions of this docu ...
  • Identification of Design and Evaluation Criteria
    Identification of Design and Evaluation Criteria
    Petracek, S. J.
    1977-09-01 | PDF
    As part of a recent study of railroad switchyard technology, SRI determined that the design of classification yards significantly influences the effectiveness of yard operations. For example, we found that the number and/or length of yard tracks are a major problem at more than one-third of all classification yards. The study projected that as many ...
  • Review of Classification Yard Design Practices
    Review of Classification Yard Design Practices
    Petracek, S. J.
    1977-08-01 | PDF
    As part of a recent study of railroad switchyard technology, SRI determined that the design of classification yards has a significant impact on the effectiveness of yard operation. In addition, classification yards have been identified as a major source of other significant railroad problems, such as delays, delivery time unreliability, and low uti ...
  • The Texas Rail System An Operating and Facility Description
    The Texas Rail System: An Operating and Facility Description
    Sammon, John P
    1977-07-01 | PDF
    This report describes the operations and facilities comprising the Texas rail system and identifies relationships among rail operations, financial trends and rail facilities. Rather than an attempt to chronical each mile of rail line in Texas and categorize the physical characteristics of rail line with indices of relative "quality," this report de ...
    Supporting Files
  • Traintotrain rear end impact tests volume II impact test summaries
    Train-to-train rear end impact tests - volume II - impact test summaries
    Anderson, R. L. ;
    Cramer, P. L.
    1977-03-31 | PDF
    This final report documents these nine tests. Volume I, Pre-Impact Determination of Vehicle Properties, summarizes the vehicle properties obtained prior to the impact tests. These vehicle properties were used in computer simulation of the impact tests and included weights, pitch moments of inertia, force deflection characteristics, vertical center ...
  • Maintaining Alertness in Railroad Locomotive Crews
    Maintaining Alertness in Railroad Locomotive Crews
    Devoe, D B ;
    Abernethy, C N
    1977-03-01 | PDF
    The problem of assuring alertness in railroad locomotive crews is defined. Principles for maintaining alertness are derived from the experimental literature on vigilance and several unresolved questions are explored through three experiments. The findings are summarized in a set of criteria for evaluating alerting devices and techniques, and device ...
  • Potential means of cost reduction in grade crossing automatic gate systems volume II improved gate arm concepts for railroadhighway grade crossings gate systems
    Potential means of cost reduction in grade crossing automatic gate systems. volume II : improved gate arm concepts for railroad/highway grade crossings gate systems
    Duttera, James ;
    Friedland, Martin
    1977-02-28 | PDF
    This report, Volume II of a two-volume study, examines the potential for reduction of the cost of installing and maintaining automatic gates at railroad-highway grade crossings. It includes a review of current practices, equipment, and standards; consideration of modification of existing specifications to permit use of alternative technologies; gen ...
  • Potential means of cost reduction in grade crossing automatic gate systems volume I overview and low cost railroadhighway grade crossing gate systems
    Potential means of cost reduction in grade crossing automatic gate systems. volume I : overview and low cost railroad/highway grade crossing gate systems
    St. Amant, Andrew
    1977-02-28 | PDF
    This report, Volume I of a two-volume study, examines the potential for reduction of the cost of installing and maintaining automatic gates at railroad-highway grade crossings. It comprises a general overview; a review of current practices, equipment, and standards; a consideration of modification of existing specifications to permit use of alterna ...
  • Aerodynamic Forces on Freight Trains Volume I Wind Tunnel Tests of Containers and Trailers on Flatcars
    Aerodynamic Forces on Freight Trains: Volume I. Wind Tunnel Tests of Containers and Trailers on Flatcars
    Hammitt, Andrew G.
    1976-12-01 | PDF
    The aerodynamic forces on trailers and containers on flatcars have been measured in wind tunnel tests. The forces were measured on the central car of a five-car train consisting of a locomotive, three flatcars with various loadings and a boxcar. Tests were made over a range of yaw angles and with different loadings. Standard trailers, containers an ...
  • Locomotive Cab Design Development Volume 1 Analysis of Locomotive Cab Environment Development of Cab Design Alternatives
    Locomotive Cab Design Development. Volume 1: Analysis of Locomotive Cab Environment & Development of Cab Design Alternatives
    Robinson, J ;
    Piccione, D.
    1976-10-01 | PDF
    This report presents an analysis of the line haul freight engineer's working and living environment, the resultant locomotive cab design and design alternatives. The analysis is based on a delineation of functional requirements found in current line haul operations together with those additional requirements which could arise during the next 10-15 ...
  • Locomotive Cab Design Development Volume 2 Operators Manual Interim Report
    Locomotive Cab Design Development Volume 2: Operator's Manual - Interim Report
    Robinson, J ;
    Piccione, D.
    1976-10-01 | PDF
    Locomotive Cab 913 designed as a result of Contract DOT-TSC- 913 has been built as a hard mock-up. This Operator's Manual is to familiarize the user with the mock-up. Normal and emergency procedures and cab facilities are described.
  • Models of Railroad PassengerCar Requirements in the Northeast Corridor Volume II Users Guide
    Models of Railroad Passenger-Car Requirements in the Northeast Corridor: Volume II: User's Guide
    Fourer, Robert
    1976-09-30 | PDF
    Models and techniques for determining passenger-car requirements in railroad service were developed and applied by a research project of which this is the final report. The report is published in two volumes. The solution and analysis of the Northeast Corridor models required the creation of a number of computer programs of several kinds. These pro ...
  • Models of Railroad PassengerCar Requirements in the Northeast Corridor Volume I Formulation and Results
    Models of Railroad Passenger-Car Requirements in the Northeast Corridor: Volume I. Formulation and Results
    Fourer, Robert
    1976-09-30 | PDF
    Models and techniques for determining passenger-car requirements in railroad service were developed and applied by a research project of which this is the final report. The report is published in two volumes. This volume considers a general problem of determining optimal passenger-car allocations given a fixed schedule and predetermined demands. Re ...
  • Standby power for railroadhighway grade crossing warning systems
    Standby power for railroad-highway grade crossing warning systems
    Holmstrom, F. Ross
    1976-09-30 | PDF
    The requirements for standby power at railroad-highway grade crossings, as established by the states, the Association of American Railroads, and the individual railroads, are described. Standard means of satisfying these requirements, using 115 vac primary power and storage batteries for standby, are compared with a number of new techniques, now pa ...
  • Locomotive cab design development Volume 5 performance evaluation tests
    Locomotive cab design development. Volume 5 : performance evaluation tests
    Robinson, J
    1976-09-01 | PDF
    This document reports on a preiiminary evaluation o f the BumanFactors design proposed for a line haul freight locomotivecab . The program was conducted using a full scale hard mock-upo f the proposed design and the evaluation was provided by engineersfrom the former Penn Central Transportation Company . During theprogram the techniques utilized we ...
1141 - 1160 / 1196
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