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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 541 - 560 of 1162 results
  • Tread buildup on railroad wheels
    Tread buildup on railroad wheels.
    Cummings, Scott ;
    Sammon, Devin
    2015-04-01 | PDF
    Based on the results of wheel slide tests and an inspection of wheels, the root cause of tread buildup (TBU) was identified aswheel slide caused by excessive brake force. During the tests, TBU accumulated to the greatest heights under dry conditions, atlonger slide distances, and under heavier axle loads. Train speeds between 20 and 30 mph appeared ...
  • Freight railroads background
    Freight railroads background.
    United States. Federal Railroad Administration. Office of Railroad Policy and Development  ...
    2015-04-01 | PDF
    In 2013, the Class I railroad freight industry generated a record $72.9 billion in revenue.The seven Class I railroad systems account for nearly 95 percent of the industry’s totalrevenue.1The railroad industry produced 1.7 trillion revenue ton-miles, a unit ofmeasurement that incorporates both weight and distance, reflecting an increase of 1.6perce ...
  • Identification of highspeed rail ballast flight risk factors and risk mitigation strategies final report
    Identification of high-speed rail ballast flight risk factors and risk mitigation strategies - final report.
    Saat, M.R. ;
    Bedini-Jacobini, F.
    2015-04-01 | PDF
    The phenomenon of flying ballast is well-documented in high-speed rail operations. Displaced ballast particles from the track bedmay cause damage to rolling stock as well as the track infrastructure, and wayside structures close to the right of way of the railroad.This report provides comprehensive information to help identify potential causes and ...
  • Using signal detection theory to understand grade crossing warning time and motorist stopping behavior
    Using signal detection theory to understand grade crossing warning time and motorist stopping behavior.
    Raslear, Thomas G.
    2015-02-01 | PDF
    Motorist error or poor judgment is a significant causal factor in highway-rail grade crossing collisions. Crashes at grade crossingsequipped with warning devices often involve motorists who drive around gates or across railroad tracks while flashing lights are warningthem that a train is approaching. This noncompliant behavior may be due to the mot ...
  • Validation of the train energy and dynamics simulator TEDS
    Validation of the train energy and dynamics simulator (TEDS).
    Sharma & Associates, Inc.
    2015-01-01 | PDF
    FRA has developed Train Energy and Dynamics Simulator (TEDS) based upon a longitudinal train dynamics and operationssimulation model which allows users to conduct safety and risk evaluations, incident investigations, studies of train operations,ride quality evaluations, and evaluations of current equipment and new equipment designs.This document de ...
  • Locomotive Biofuel Study Rail Yard and Over the Road Measurements Using Portable Emissions Measurement System Final Report
    Locomotive Biofuel Study — Rail Yard and Over the Road Measurements Using Portable Emissions Measurement System: Final Report
    Frey, H. Christopher ;
    Graver, Brandon M.
    2015-01-01 | PDF
    The emissions of three locomotive engines were measured with ULSD and multiple biofuel blends, including B10, B20, and B40. B20 biodiesel fuel reduced emissions of carbon dioxide (CO2), carbon monoxide (CO), hydrocarbon (HC), and particulate matter (PM). Portable Emissions Measurement Systems (PEMS) were used to measure the exhaust concentrations a ...
  • Broken rims in railroad wheels
    Broken rims in railroad wheels.
    Cummings, Scott
    2014-12-01 | PDF
    Broken wheels are one of the most common types of equipment-caused train accidents. The failure of rail car wheel rims, whichare usually the result of shattered rims or vertical split rims (VSR), are the leading cause of wheel-related accidents, and they areincreasing as a percentage of all equipment-related accidents. The root causes of shattered ...
  • Development fabrication and testing of locomotive crashworthy components base effort
    Development, fabrication and testing of locomotive crashworthy components : base effort.
    Llana, Patricia ;
    Stringfellow, Richard
    2014-12-01 | PDF
    The Federal Railroad Administration (FRA) and the John A. Volpe National Transportation Systems Center (Volpe Center) are continuing to evaluate new technologies for increasing the safety of passengers and operators in rail equipment. In recognition of the importance of override prevention in train-to-train collisions in which one of the vehicles i ...
  • Locomotive emissions measurements for various blends of biodiesel fuel
    Locomotive emissions measurements for various blends of biodiesel fuel.
    Hedrick, John C. ;
    Fritz, Steven G.
    2014-12-01 | PDF
    The objective of this project was to assess the effects of various blends of biodiesel on locomotive engine exhaust emissions. Theemission tests were conducted on two locomotive models, a Tier 2 EMD SD70ACe and a Tier 1 Plus GE Dash9-44CW, using twobaseline fuels: (1) conventional EPA ASTM No. 2-D S15 certification diesel fuel and (2) commercially ...
  • Track profile approximation using railcar body acceleration data
    Track profile approximation using railcar body acceleration data.
    Al-Nazer, Leith
    2014-12-01 | PDF
    Accelerations are frequently measured from the car body of a rail vehicle, which is mounted above one or more suspensionsystems. Measuring accelerations in the car body is largely done for convenience, as mounting an accelerometer to a truck or axleof a railcar is more cumbersome than simply placing an accelerometer inside the railcar body. For tho ...
  • Prototype design and test of a collision protection system for cab car engineers
    Prototype design and test of a collision protection system for cab car engineers.
    United States. Federal Railroad Administration. Office of Research and Development
    2014-12-01 | PDF
    Advancements in the design of rail cars canpotentially prevent the structural collapse ofspace occupied by a cab car engineerduring a train collision. With adequatesurvival space maintained, the nextcrashworthiness objective is to minimize theconsequences of any resulting secondaryimpact between the engineer and the controlstand. A conceptual Engin ...
  • Passenger train emergency systems development of prototype railEXODUS software for US passenger rail car egress
    Passenger train emergency systems : development of prototype railEXODUS software for U.S. passenger rail car egress.
    Galea, Ed R ;
    Blackshields, D.
    2014-11-01 | PDF
    The Federal Railroad Administration (FRA), U.S. Department of Transportation (U.S. DOT), is sponsoring a research program, which includes investigation of the applicability of time-based egress performance requirements to U.S. passenger rail cars. This report describes the development of a new prototype railEXODUS computer software (Prototype Softw ...
  • BNSF San Bernardino Case Study Positive Train Control Risk Assessment
    BNSF San Bernardino Case Study: Positive Train Control Risk Assessment
    Brod, Daniel ;
    Leslau, Boaz
    2014-09-01 | PDF
    The Federal Railroad Administration funded the BNSF San Bernardino Case Study to verify its Generalized Train Movement Simulator (GTMS) risk assessment capabilities on a planned implementation of the I-Electronic Train Management System (I-ETMS) positive train control (PTC) system. The analysis explicitly simulated a 10-year period of railroad oper ...
  • FullScale Shell Impact Test of a DOT112 Tank Car Research Results
    Full-Scale Shell Impact Test of a DOT-112 Tank Car [Research Results]
    United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and Development
    2014-08-01 | PDF
    On February 26, 2014, FRA conducted a full-scale side impact test of a DOT112J340W specification tank car (DOT112) at the Transportation Technology Center, Inc. (TTCI) in Pueblo, CO. The shell of the car was struck at its mid-length by a 297,000 pound ram car equipped with a 12-inch by 12-inch impactor. The intent of this test was to demonstrate th ...
  • FullScale Shell Impact Test of a DOT111 Tank Car Research Results
    Full-Scale Shell Impact Test of a DOT-111 Tank Car [Research Results]
    United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and Development
    2014-08-01 | PDF
    On December 18, 2013, FRA conducted a full-scale shell impact test of a DOT111A100W1 specification tank car (DOT111) at the Transportation Technology Center, Inc. (TTCI) in Pueblo, CO. The tank car selected for this test was a jacketed DOT111 (general purpose) tank car with heating coils and sloping shell rings. The shell of the car was struck at i ...
  • Construction Loads Experienced by Plastic Composite Ties
    Construction Loads Experienced by Plastic Composite Ties
    Reiff, Richard
    2014-07-01 | PDF
    Damage to plastic composite ties during handling and track installation has been reported by a number of railroads. Results from a survey conducted to identify specific handling issues were used to develop field and laboratory tests to measure the loads plastic composite ties are subjected to during handling and installation. Results suggest ties t ...
  • Update From C3RS Lessons Learned Team Four Demonstration Pilots
    Update From C3RS Lessons Learned Team: Four Demonstration Pilots
    Ranney, Joyce ;
    Raslear, Thomas G.
    2014-07-01 | PDF
    The Federal Railroad Administration (FRA) believes that, in addition to process and technology innovations, human-factors-based solutions can significantly contribute to improving safety in the railroad industry. To test this assumption, FRA implemented the Confidential Close Call Reporting System (C3 RS), which includes the following: Confidential ...
  • Ground penetrating radar evaluation and implementation
    Ground penetrating radar evaluation and implementation.
    United States. Federal Railroad Administration
    2014-07-01 | PDF
    Six commercial ground penetrating radar (GPR)systems were evaluated to determine the state-of-the-art of GPR technologies for railroad tracksubstructure inspection.Phase 1 evaluated GPR ballast inspectiontechniques by performing testing at theTransportation Technology Center (TTC) inPueblo, CO. The evaluation was conducted atthe Facility for Accele ...
  • Load Environment of Rail Joint Bars Phase II Joint Bar Service Environment and Fatigue Analysis
    Load Environment of Rail Joint Bars – Phase II, Joint Bar Service Environment and Fatigue Analysis
    Akhtar, Muhammad ;
    Koch, Kevin
    2014-07-01 | PDF
    Detailed analysis of measured bending strains shows that the foundation deflections have the most significant effect on the magnitude of strains. All other factors, such as track type, track geometry, and fastening systems, have a less significant effect on strain levels. Fatigue analysis of the current and proposed candidate materials indicate tha ...
  • Evaluation of WheelRail Contact Mechanics Roller Rig Concept Design Review
    Evaluation of Wheel/Rail Contact Mechanics: Roller Rig Concept Design Review
    Ahmadian, Mehdi ;
    Craft, Michael
    2014-07-01 | PDF
    A need exists for a new test rig design with advanced sensing technologies that will allow the railroad industry and regulatory agencies to better understand the wheel-rail contact dynamics and mechanics, especially as it pertains to high-speed rail. Both scaled and full-scale designs are being investigated. The use of scaled designs will make test ...
541 - 560 / 1162