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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 981 - 1000 of 1162 results
  • Influence of Contact Patch Resistance on Loss of Shunt at HighwayRailroad Grade Crossing
    Influence of Contact Patch Resistance on Loss of Shunt at Highway-Railroad Grade Crossing
    Reiff, Richard ;
    Gage, Scott
    1997-02-01 | PDF
    Results of testing completed to date have revealed no promising mitigation techniques to reduce or eliminate loss of shunt on highway/rail grade crossing island circuits. During the course of this test program, results have shown that resistive films that develop on the running surfaces of wheels and rails are a major contributor to loss of shunt. ...
  • Safety of HighSpeed Ground Transportation Systems Human Factors Phase II Design and Evaluation of Decision Aids for Control of HighSpeed Trains Experiments and Model
    Safety of High-Speed Ground Transportation Systems: Human Factors Phase II: Design and Evaluation of Decision Aids for Control of High-Speed Trains: Experiments and Model
    Askey, S. ;
    Sheridan, T.
    1996-12-01 | PDF
    Although the speed of some guided ground transportation systems continues to increase, the reaction time and the sensory and information processing capacities of railroad personnel remain constant. This second report in a series examining critical human factors issues in future high-speed rail systems, describes the design and evaluation of compute ...
    Supporting Files
  • Operator Performance Measurement Developing Commonality Across Transportation Modes Proceedings of a September 1994 Workshop
    Operator Performance Measurement - Developing Commonality Across Transportation Modes - Proceedings of a September 1994 Workshop
    DOT Human Factors Coordinating Committee ;
    Huey, B.M
    1996-11-01 | PDF
    This report describes the proceedings of the Workshop on Human Factors Research held in Reston, Virginia. Theobjectives of the workshop were to: foster an interchange of experience in measuring and analyzing operator performancedata; encourage commonality in operator performance and measurement and analysis; identify opportunities for cross-modalre ...
  • Enhancing rail safety now and into the 21st century the Federal Railroad Administrations safety programs and initiatives a report to Congress
    Enhancing rail safety now and into the 21st century : the Federal Railroad Administration's safety programs and initiatives : a report to Congress
    United States. Department of Transportation. Federal Railroad Administration
    1996-10-01 | PDF
    By law, the Federal Railroad Administration (FRA) has responsibility for ensuring railroad safety throughout the nation. The United States railroad system consists of over 600 railroads with more than 250,000 employees, 200,000 miles of track, 1.2 million freight cars, and 20,000locomotives. To monitor railroad compliance with federally mandated sa ...
  • Safety of HighSpeed Ground Transportation Systems Crashworthiness Testing of Amtraks Traditional Coach Seat
    Safety of High-Speed Ground Transportation Systems: Crashworthiness Testing of Amtrak’s Traditional Coach Seat
    Tyrell, David C. ;
    Severson, Kristine J.
    1996-10-01 | PDF
    Tests have been conducted on Amtrak's traditional passenger seat to evaluate its performance under static and dynamic loading conditions. Quasi-static tests have been conducted to establish the load-deflection characteristics of the seat. Dynamic tests of selected collision conditions have been also conducted with instrumented Hybrid III dummies to ...
  • Accident/incident bulletin : calendar year 1995
    United States. Federal Railroad Administration
    1996-08-01 | PDF
    Railroads must file monthly accident/incident reports with the Federal Railroad Administration’s (FRA) Office of Safety. Bulletin 164 is a summary of accident/incident data reported by 679 railroads for calendar year 1995. The FRA Guide for Preparing Accident/Incident Reports was reprinted in 1993. It incorporates many suggestions received from rep ...
    Dataset
  • Procedure to Establish Inspection Intervals of Regularly Maintained InService Units Subject of Failure
    Procedure to Establish Inspection Intervals of Regularly Maintained In-Service Units Subject of Failure
    Mengert, Peter ;
    Davin, J.
    1996-05-01 | PDF
    Procedures have been developed for determining the period between regular inspections that is required to ensure, with a specified level of confidence, that no more than a certain percentage of the units of a population that is in service is failed. The procedure assumes that the units have a uniform random failure rate and that the population is d ...
  • Locomotive Crashworthiness Research Volume 5 Cab Car Crashworthiness Report
    Locomotive Crashworthiness Research: Volume 5: Cab Car Crashworthiness Report
    Mayville, Ronald A. ;
    Stringfellow, Richard G.
    1996-03-01 | PDF
    Models used to analyze locomotive crashworthiness are modified for application to control cab cars of the types used for intercity and commuter rail passenger service. An existing control cab car is analyzed for crashworthiness based on scenarios developed from two accidents. The peak strength of crashworthiness-related components is found to excee ...
  • Estimation of actual residual stresses due to braking and contact loading of rail vehicle wheels
    Estimation of actual residual stresses due to braking and contact loading of rail vehicle wheels
    Holowinski, M ;
    Bobrov, E S
    1996-03-01 | PDF
    A finite element formulation for shakedown stress analysis of rail vehicle wheels is presented, based on a hypothesis that the shakedown state is axisymmetric. The method can be used to estimate shakedown stresses in wheels subjected to combined mechanical (wheel/rail contact) and thermal (temperature gradients and thermal stress due to braking) lo ...
  • Investigation of the effects of braking system configurations on thermal input to commuter car wheels
    Investigation of the effects of braking system configurations on thermal input to commuter car wheels
    Orringer, O. ;
    Gordon, J.
    1996-03-01 | PDF
    A heat transfer model, previously developed to estimate wheel rim temperatures during tread braking of MU power cars and validated by comparison with operational test results, is extended and appplied to cases involving several different blended brake system configurations. Preliminary and final system configurations defined by the car owner/operat ...
  • Safety of High Speed Ground Transportation Systems Track Lateral Shift Fundamentals and StateoftheArt Review
    Safety of High Speed Ground Transportation Systems: Track Lateral Shift: Fundamentals and State-of-the-Art Review
    Samavedam, G. ;
    Blader, F.
    1996-02-01 | PDF
    This report presents a review of the state of the art of track lateral shift analysis, with improved concepts for safety evaluation of high speed trains generating track shift forces. The mechanics of track shift and the resulting track failure modes are defined. A critical review of the track shift literature from France, England, Sweden, Japan an ...
  • Prospects for making carbidefree bainitic thick steel plate by means of controlled quenching a first estimate
    Prospects for making carbide-free bainitic thick steel plate by means of controlled quenching : a first estimate
    Gordon, Jeff ;
    Orringer, O.
    1995-11-12 | PDF
    Materials used for the shells of pressurized railroad tank carsmust be strong and inexpensive, yet also easily weldable andresistant to fracture. The high costs associated with special alloycompositions have made it difficult in the past to find improvedmaterials that attain all of these goals. Recent advances in steelmaking research indicate that ...
  • Analysis of occupant protection strategies in train collisions
    Analysis of occupant protection strategies in train collisions
    Tyrell, David C. ;
    Severson, Kristine J.
    1995-11-01 | PDF
    A study of the occupant dynamics and predicted fatalities due to secondary impact for passengers involved in train collisions with impact speeds up to 140 mph is described. The principal focus is on theeffectiveness of alternative strategies for protecting occupants in train collisions, including friendly interior arrangements and occupant restrain ...
  • Train crashworthiness design for occupant survivability
    Train crashworthiness design for occupant survivability
    Tyrell, David C. ;
    Severson, Kristine J.
    1995-11-01
    Studies were conducted evaluating the effectiveness of alternative strategies for providing crashworthiness of the vehicle structures. Conventional practice results in cars of essentially uniformlongitudinal strength. The crash energy management approach requires varying strength through the train, with high strength in the occupied areas and lower ...
  • Passenger Acceptance of Alignments with Frequent Curves in Maglev or Other VeryHighSpeed Ground Systems
    Passenger Acceptance of Alignments with Frequent Curves in Maglev or Other Very-High-Speed Ground Systems
    Pollard, John K. ;
    Katz-Rhoads, Leonore
    1995-10-31 | PDF
    Proposed high-speed ground transportation systems, such as Maglev, may have motion characteristicsaffecting passenger comfort which set them apart from anything previously experienced. Operating ataircraft speeds along rights-of-way established for conventional ground vehicles, Maglevs may subjectpassengers to significantly larger vertical accelera ...
  • Safety of High Speed Ground Transportation Systems Safety of Advanced Braking Concepts for High Speed Ground Transportation Systems
    Safety of High Speed Ground Transportation Systems: Safety of Advanced Braking Concepts for High Speed Ground Transportation Systems
    Wagner, D P ;
    Ahlbeck, D R
    1995-09-01 | PDF
    The objective of this study is to develop qualitative and quantitative information on the various braking strategies used in high-speed ground transportation systems in support of the Federal Railroad Administration (FRA). The appoarch employed in this study is composed of two steps: first, build a technical understanding of the various braking str ...
  • Human Factors Guidelines for the Evaluation of the Locomotive Cab
    Human Factors Guidelines for the Evaluation of the Locomotive Cab
    Multer, J. ;
    Rudich, R.
    1995-09-01 | PDF
    This document presents human factors guidelines for the evaluation of the locomotive cab. These guidelines are part ofan effort to evaluate working conditions and safety in the locomotive cab. The guidelines will serve as a decisionmaking tool for evaluating current and proposed locomotive designs and in particular Association of American Railroads ...
  • Analytical methodology for safety validation of computer controlled subsystems Volume 1 stateoftheart and assessment of safety verificationvalidation methodologies
    Analytical methodology for safety validation of computer controlled subsystems. Volume 1 : state-of-the-art and assessment of safety verification/validation methodologies
    Luedeke, J F
    1995-09-01 | PDF
    This report describes the development of a methodology designed to assure that a sufficiently high level of safety is achieved and maintained in computer-based systems which perform safety critical functions in high-speed rail or magnetic levitation transportation systems. This report consists of two volumes. This, the first, presents a glossary of ...
  • AccidentIncident Bulletin No 163 Calendar Year 1994
    Accident/Incident Bulletin No. 163: Calendar Year 1994
    United States. Department of Transportation. Federal Railroad Administration
    1995-08-01 | PDF
    The FRA Guide for Preparing Accident/Incident Reports was reprinted in 1993. It incorporates many suggestions received from representatives of various segments of the railroad safety community. The primary goal of this revision was to improve uniformity of reporting between railroads though additional clarification of the existing reporting require ...
  • Use of auxiliary external alerting devices to improve locomotive conspicuity
    Use of auxiliary external alerting devices to improve locomotive conspicuity
    Carroll, A A ;
    Multer, J.
    1995-07-01 | PDF
    Historically, highway-railroad grade crossings have represented a major hazard to motor vehicle drivers. The Federal Railroad Administration (FRA), U.S. Department of Transportation (USDOT) has initiated a comprehensive research program to address grade crossing safety issues in order to reduce the number of train-motor vehicle collisions. One area ...
981 - 1000 / 1162