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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 1101 - 1120 of 1162 results
  • Truck Design Optimization Project Phase II Analytical Tool Assessment Report
    Truck Design Optimization Project Phase II. Analytical Tool Assessment Report
    Johnson, L ;
    Gilchrist, A
    1979-08-01 | PDF
    One of the objectives of the Truck Design Optimization Project (TDOP) Phase II is to define the performance of newer Type II freight car truck designs versus the standard, three-piece Type I truck. To accomplish this dynamic performance evaluation, TDOP Phase II will utilize field test data and analytical tools. The analytical tools, consisting pri ...
  • Demonstration of Dynamic Track Assignment Program Phase 1 Report
    Demonstration of Dynamic Track Assignment Program: Phase 1 Report
    Wong, P. J. ;
    Elliott, C. V.
    1979-06-01 | PDF
    This project expands Southern Pacific's CACTUS (Computer Assisted Classification Track Utilization System) computer program to incorporate numerous enhancements and modifications necessary to assist a yardmaster in making real-time track assignment decisions in an actual field trial. The prototype program developed maximizes classification track us ...
  • Aerodynamic Forces on Freight TrainsVolume IV Wind Tunnel Tests of Freight Cars and New Trailer and Container Car Designs
    Aerodynamic Forces on Freight Trains-Volume IV Wind Tunnel Tests of Freight Cars and New Trailer and Container Car Designs
    Hammitt, Andrew G.
    1979-06-01 | PDF
    The aerodynamics of freight trains has been the subject of a series of reports in a continuing investigation. Volume 1 reported on a wind tunnel investigation of trailer on flatcar and container on flatcar tests; Volume 2, a full-scale test of trailers on flatcars; and Volume 3 covered the correlation of the full-scale tests and wind tunnel tests. ...
  • Flywheel Energy Storage Switcher Volume 1 Study Summary and Detailed Description of Analysis
    Flywheel Energy Storage Switcher: Volume 1 - Study Summary and Detailed Description of Analysis
    Cook, L. M. ;
    Curran, W. T.
    1979-04-01 | PDF
    An indepth study of the application of flywheel energy storage to the railroad switchyard locomotive was conducted to determine the practicality and viability of such a system. the system, as originally conceived, required the use of separately excited traction motors, and a major task of the study was to test separately excited version of the Elec ...
  • Resistance of a Freight Train to Forward Motion Volume II Implementation and Assessment
    Resistance of a Freight Train to Forward Motion – Volume II, Implementation and Assessment
    Muhlenberg, J D
    1979-04-01 | PDF
    This interim report is a supplement to a previous report and documents the results of the second portion of an investigation of the train resistance phenomenon. This portion of the effort was specifically directed toward determination of possible fuel savings to be effected through certain design improvements or equipment modifications when a freig ...
  • Wayside energy storage study Volume 4 dualmode locomotive preliminary design study
    Wayside energy storage study. Volume 4 : dual-mode locomotive : preliminary design study
    Lawson, L J ;
    Cook, L M
    1979-02-01 | PDF
    A preliminary design study was conducted to confirm the technical viability and economic attractiveness of the dual-mode locomotive concept based on the most common U.S. road locomotive, the SD40-2. The study examined the existing characteristics of the base locomotive and ensured that operation in the diesel mode would not be compromised by a loco ...
  • Selected Topics in Railroad Tank Car Safety Research Volume 1 Fatigue Evaluation of Prototype Tank Car Head Shield
    Selected Topics in Railroad Tank Car Safety Research. Volume 1: Fatigue Evaluation of Prototype Tank Car Head Shield
    Johnson, Milton R.
    1978-08-01 | PDF
    The characteristics of a prototype head shield for hazardous material tank cars were evaluated with respect to the maintenance of its structural integrity under normal service conditions. The primary concern was with the resistance to fatigue damage of head shield connections to the tank car. The evaluation was conducted by performing tests on a ta ...
  • Selected topics in railroad tank car safety Volume 2 test plan for accelerated life testing of thermally shielded tank cars
    Selected topics in railroad tank car safety. Volume 2 : test plan for accelerated life testing of thermally shielded tank cars
    Johnson, M R ;
    Viergutz, O J
    1978-08-01 | PDF
    A test plan for the accelerated life testing of thermally shielded tank cars is described. The test program would be conducted at the DOT Transportation Test Center in Pueblo, Colorado. Eighteen tank cars would be included in the program. Five cars would be equipped with a jacketed thermal shield, and 13 cars would be equipped with a spray-on chemi ...
  • A Costing Methodology for Freight Cars The Test of IncurrenceConsumption Relationships Volume 1
    A Costing Methodology for Freight Cars: The Test of Incurrence/Consumption Relationships [Volume 1]
    Hill, D ;
    deSostoa, V
    1978-06-01 | PDF
    This report explores the incurrence/consumption relationship for freight cars and applications of the information developed. Incurrence is the accrual of expense dollars for freight car repairs. Costs are incurred directly for labor and material, while overhead costs are applied for specific facilities. Consumption has been defined as the use of sp ...
  • A Costing Methodology for Freight Cars The Conceptual Design of a Cost Information System Volume 2
    A Costing Methodology for Freight Cars: The Conceptual Design of a Cost Information System [Volume 2]
    Hill, D ;
    deSostoa, V
    1978-06-01 | PDF
    The cost information system discussed in this report to the Federal Railroad Administration employs the concept of standard cost accounting. The system is designed to collect and analyze all categories of freight car repairs and provide sufficient information to management to support pricing decisions (discussed in Volume I). Because each railroad' ...
  • Resistance of a Freight Train to Forward Motion Volume I Methodology and Evaluation
    Resistance of a Freight Train to Forward Motion - Volume I, Methodology and Evaluation
    Muhlenberg, J D
    1978-04-01 | PDF
    This interim report documents the results of the initial portion of an intensive investigation of the train resistance phenomenon. The history and development of prior investigations are discussed and the formulas for train resistance developed by investigators in the U.S. and abroad are analyzed with respect to their present applicability to the p ...
  • 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
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