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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 121 - 140 of 1163 results
  • Performance of Prototype No 20 Frogs in Revenue Service Research Results
    Performance of Prototype No. 20 Frogs in Revenue Service [Research Results]
    Baillargeon, Jay ;
    Woody, Sean
    2022-09-01 | PDF
    Transportation Technology Center, Inc. (TTCI) evaluated the performance of several No. 20 fixed-point frogs on Norfolk Southern Railway (NS) in Kentucky. This effort was part of the Heavy Axle Load (HAL) Revenue Service Test Program jointly supported by the Federal Railroad Administration (FRA) and Association of American Railroads (AAR). Research ...
  • LargeScale Testing and Numerical Modeling of Full and ReducedScale Rail Car Floor Assemblies
    Large-Scale Testing and Numerical Modeling of Full- and Reduced-Scale Rail Car Floor Assemblies
    Rippe, Christian ;
    Lattimer, Brian Y.
    2022-09-01 | PDF
    A previously developed methodology for reducing the physical scale of test articles for fire performance testing of rail car floors was benchmarked using a series of large-scale tests and validated finite element simulations. The simulations showed that the experimental differences between the full-scale and reduced-scale test articles was due to t ...
  • Side Impact Test and Analyses of a DOT113 Surrogate Tank Car with Cryogenic Lading
    Side Impact Test and Analyses of a DOT-113 Surrogate Tank Car with Cryogenic Lading
    Belport, Steve ;
    Carolan, Michael
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) conducted a side impact test of a surrogate DOT-113 tank car at the Transportation Technology Center, Inc. (TTCI) to evaluate the performance of the tank car under dynamic impact conditions and to provide data for the verification and refinement of a computational model. The tank car surrogate was filled wi ...
  • OnBoard Broken Rail Detection OBRD Research and Development Research Results
    On-Board Broken Rail Detection (OBRD) Research and Development [Research Results]
    Withers, Jared ;
    Rosier, Isaac
    2022-09-01 | PDF
    From October 2019 to May 2022, the Federal Railroad Administration (FRA) sponsored a research and development project, performed by Transportation Technology Center, Inc. (TTCI), to research the feasibility of an Onboard Broken Rail Detection (OBRD) concept at the Transportation Technology Center. The research team collaborated with a rail industry ...
  • Human Error Analyses Associated with Locomotive Cab Automation Research Results
    Human Error Analyses Associated with Locomotive Cab Automation [Research Results]
    Jones, Michael
    2022-09-01 | PDF
    The purpose of this work was to demonstrate improved system performance on a selected automated system by implementing a function allocation methodology that enables design of a display interface for that system that makes best use of human as well as machine capabilities.
  • Mitigation of Differential Movement at Railway Transitions for US HighSpeed Passenger Rail and Joint PassengerFreight Corridors
    Mitigation of Differential Movement at Railway Transitions for U.S. High-Speed Passenger Rail and Joint Passenger/Freight Corridors
    Tutumluer, Erol ;
    Mishra, Debakanta
    2022-09-01 | PDF
    To address the need to minimize differential movement at railway transitions for joint high-speed passenger and freight routes in the U.S., this research study identified and studied three problematic bridge approaches near Chester, PA, along Amtrak’s Northeast Corridor line and another two on the N-Line mainline of Norfolk Southern near Ingleside, ...
  • Development of Locomotive Powered Freight Car Electrical Power Supply System EPSS Method for Electrical Power Distribution on Freight Trains
    Development of Locomotive Powered Freight Car Electrical Power Supply System (EPSS): Method for Electrical Power Distribution on Freight Trains
    Brabb, David C. ;
    Martin, Kenneth L.
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) previously demonstrated advanced, remotely controlled, electro-mechanical systems, such as hand brakes, angle cocks, and cut levers that can contribute to increased safety and improved efficiency of freight railroad operations. The main impediment to implementation of such devices is the lack of reliable an ...
  • Rainy Section Track Settlement Model Research Results
    Rainy Section Track Settlement Model [Research Results]
    Baillargeon, Jay ;
    Woody, Stephen (Sean)
    2022-09-01 | PDF
    The objective of this study was to develop an improved track settlement model using the unique capabilities of the Rainy Section at the FRA’s Transportation Technology Center. Through this research, the interaction of ballast observed from recent laboratory testing [6]. • Post-ballast consolidation and a linear settlement trend are assumed with MGT ...
  • TraintoTrain Impact Test Wheelchair Securement Experiments
    Train-to-Train Impact Test: Wheelchair Securement Experiments
    Gordon, Jeff
    2022-09-01 | PDF
    Researchers crash-tested off-the-shelf wheelchair securement devices in a train-to-train impact test at the Transportation Technology Center in Pueblo, Colorado, on August 11, 2022. Two wheelchair securement devices and one backboard (baseline experiment) were each tested with a Hybrid III 50th percentile male (H3-50M) anthropomorphic test device ( ...
  • Demonstration of MechanicsBased Track Geometry Deterioration Models Research Results
    Demonstration of Mechanics-Based Track Geometry Deterioration Models [Research Results]
    Thompson, II, Hugh B
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) contracted Transportation Technology Center, Inc. (TTCI) to expand on existing mechanics-based ballast condition forecasting models. This report demonstrates how one of the mechanics-based models performs against field data and makes recommendations for improving that model.
  • Function Allocation and New Roles for Humans in Rail Automation Research Results
    Function Allocation and New Roles for Humans in Rail Automation [Research Results]
    Jones, Michael
    2022-09-01 | PDF
    The purpose of this work was to demonstrate improved system performance on a selected automated system by implementing a function allocation methodology that enables design of a display interface for that system that makes best use of human as well as machine capabilities.
  • Rainy Section at FAST Phase I Summary Research Results
    Rainy Section at FAST: Phase I Summary [Research Results]
    Baillargeon, Jay ;
    Woody, Stephen (Sean)
    2022-09-01 | PDF
    The objective of the initial phase of this long-term study was to quantify the increase in track settlement as well as the reduction in the track modulus and ballast drainage capabilities due to increases in moisture.
  • Evaluation of EngineeredPolymer Composite Tie Performance in Revenue Service Research Results
    Evaluation of Engineered-Polymer Composite Tie Performance in Revenue Service [Research Results]
    Baillargeon, Jay ;
    Woody, Stephen (Sean)
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) and the Association of American Railroads (AAR) investigated the in-track performance of engineered-polymer composite (EPC) ties. This report summarizes the results from a revenue service test conducted by the Transportation Technology Center, Inc. (TTCI) between 2018 and 2021. Visual inspection identified ...
  • Screw Spike and Spring Washer HoldDown Force and Resiliency Investigation Research Results
    Screw Spike and Spring Washer Hold-Down Force and Resiliency Investigation [Research Results]
    Stuart, Cameron ;
    Dersch, Marcus S.
    2022-09-01 | PDF
    The Rail Transportation Engineering Center (RailTEC) at the University of Illinois (Illinois) is investigating spike failures in timber tie track to determine the root cause(s) and develop failure prevention strategies. This research is part of an ongoing investigation into spike failures sponsored by the Federal Railroad Administration (FRA) that ...
  • Fully Scalable Train Braking Simulation Environment Research Results
    Fully Scalable Train Braking Simulation Environment [Research Results]
    Jacobini, Francesco Bedini ;
    Anaya, Rachel
    2022-09-01 | PDF
    Transportation Technology Center, Inc. (MxV Rail), through a research project funded by the Federal Railroad Administration (FRA), developed a Concept of Operations (ConOps), documented the infrastructure design, and developed software to support a virtualized fully scalable train braking simulation environment (FSTBSE) that expands upon the capabi ...
  • Full Moving Block Concept and Requirements Specification for Railroad Operations
    Full Moving Block Concept and Requirements Specification for Railroad Operations
    Khasenye, David ;
    Polivka, Alan
    2022-08-31 | PDF
    In a research project funded by the Federal Railroad Administration (FRA) from May 2020 to September 2022, Transportation Technology Center, Inc. collaborated with a railroad industry technical advisory group (TAG) to develop 1) the concept, 2) the system-level, segment-level, and interface requirements, 3) the migration considerations, and 4) the ...
  • Leveraging Connected Highway Vehicle Platooning Technology to Improve the Efficiency and Effectiveness of Train Fleeting under Moving Blocks
    Leveraging Connected Highway Vehicle Platooning Technology to Improve the Efficiency and Effectiveness of Train Fleeting under Moving Blocks
    Dick, C. Tyler ;
    Work, Daniel B.
    2022-08-01 | PDF
    Future advanced Positive Train Control systems may allow North American railroads to introduce moving blocks with shorter train headways. This research examines how closely following trains respond to different throttle and brake inputs. Using insights from connected automobile and truck platooning technology, six different following train control ...
  • Track Performance in Tunnels and Transitions with Under Tie Pads and Under Ballast Mats Research Results
    Track Performance in Tunnels and Transitions with Under Tie Pads and Under Ballast Mats [Research Results]
    Stuart, Cameron ;
    Riding, Kyle A
    2022-08-01 | PDF
    Railroads have begun to use under tie pads and under ballast mats in rail track construction to better distribute train loads, reduce the track modulus, and increase the tie-to-ballast contact area. Many tunnels, bridges, and track locations with a shallow ballast layer are strong candidates for under tie pads and under ballast mats. This report re ...
  • Feasibility of a Train Horn with Optimized Directivity Environmental and Occupational Noise Benefit of an Ideal Train Horn
    Feasibility of a Train Horn with Optimized Directivity: Environmental and Occupational Noise Benefit of an Ideal Train Horn
    Ross, Jason ;
    Johnson, Timothy
    2022-08-01 | PDF
    This report examines the feasibility of and recommends an acoustical specification for such an optimized horn. The detectability of the horn signal for motorists inside vehicles, the areas of environmental noise impact and occupational noise exposure have been compared for the optimized horn and several typical standard horn systems. It has been fo ...
  • AirBorne Tie Sonar for Loaded Tie Deflection Measurements Research Results
    Air-Borne Tie Sonar for Loaded Tie Deflection Measurements [Research Results]
    Stuart, Cameron ;
    Lanza di Scalea, Francesco
    2022-08-01 | PDF
    This report presents a non-contact ultrasonic technique to map the full-field surface deflection of railroad ties using known concepts of sonar-based distance measurements. Between September 2019 and July 2021, the University of California San Diego (UCSD) created a beam with six sonar sensors and performed field testing at the UCSD Rail Defect Tes ...
121 - 140 / 1163