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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 61 - 80 of 1162 results
  • Enhancing the Safety Of Coupler Knuckles
    Enhancing the Safety Of Coupler Knuckles
    Sharma & Associates, Inc.
    2023-09-01 | PDF
    The primary objective of this research was to validate the finite element (FE) stress levels obtained during previous research through physical testing of a selected knuckle design. The validated FE model was used to investigate potential improvements in knuckle fatigue life, such as higher tensile strength material and design changes to critically ...
  • Short Line Safety Institute Testing the Fidelity of Its Robust Model Research Results
    Short Line Safety Institute: Testing the Fidelity of Its Robust Model [Research Results]
    Kidda, Starr ;
    Leone, Julia
    2023-09-01 | PDF
    The Short Line Safety Institute (SLSI) is dedicated to the continuous improvement of safety and safety culture across all short line and regional railroads in the United States. Strengthening a railroad’s safety culture may result in less frequent or severe accidents and create a safer working environment. SLSI defines safety culture as the shared ...
  • Vertical Split Rim Causes and Prevention
    Vertical Split Rim: Causes and Prevention
    Jones, Kerry ;
    Cummings, Scott
    2023-09-01 | PDF
    Vertical split rim (VSR) is a serious railway wheel failure mode that requires further research. Visual clues are not usually present until the crack propagates through the rim. To better understand the root causes of VSRs, the Federal Railroad Administration (FRA) and the Association of American Railroads (AAR) have jointly funded the investigatio ...
  • HighStrength ReducedModulus HighPerformance Concrete for Prestressed Concrete Crosstie Applications
    High-Strength, Reduced-Modulus, High-Performance Concrete for Prestressed Concrete Crosstie Applications
    Rizos, Dimitris C ;
    Zeitouni, Adam
    2023-09-01 | PDF
    High-performance concrete (HPC) with early strength development is the material of choice for fabricating prestressed concrete railroad ties. However, the higher strength of HPC results in significantly higher elastic modulus values and increases the rigidity of the tie, leading to higher amplitude stresses and stress gradients, and eventually to p ...
  • Office Safety Checker for Moving Block Train Control Systems
    Office Safety Checker for Moving Block Train Control Systems
    Rosales, Jose ;
    Viera, Paulo
    2023-09-01 | PDF
    As part of a project sponsored by the Federal Railroad Administration (FRA), Transportation Technology Center, Inc., (TTCI), developed and analyzed a concept for the Office Safety Checker (OSC) component of the Moving Block Office (MBO), a segment of a moving block train control system concept. The OSC component performs a safety validation of MBO ...
  • Operational Performance and Reliability Availability and Maintainability Analysis Model OPRAM Development
    Operational Performance and Reliability, Availability and Maintainability Analysis Model (OPRAM) Development
    Rosales, Jose ;
    Vieira, Paulo
    2023-09-01 | PDF
    Transportation Technology Center, Inc. (MxV Rail) conducted a project for the Federal Railroad Administration (FRA) to complete the development of Operational Performance and Reliability, Availability, and Maintainability (RAM) Analysis (OPRAM) tool. The team successfully developed the OPRAM software tool according to the objectives established in ...
  • Vehicle Dynamics Models for Incident Investigation
    Vehicle Dynamics Models for Incident Investigation
    Swamy, Srini ;
    Fu, Delong
    2023-09-01 | PDF
    When investigating a train derailment, vehicle/track interaction (VTI) using vehicle dynamics simulations of the key vehicles in the derailed train can help identify specific derailment causes. From September 2018 to March 2021, the Federal Railroad Administration (FRA) contracted Sharma & Associates, Inc. to develop a set of railway freight car mo ...
  • Development of a Bayesian Network Based Accident Model for Hazmat Unit Trains
    Development of a Bayesian Network Based Accident Model for Hazmat Unit Trains
    Johnson, Peter ;
    Bailakanavar, Mahesh Raju
    2023-09-01 | PDF
    The objective of this research project was to develop a predictive risk model for the release of hazardous material transported in unit trains using data science techniques for available rail accident and traffic data. This work builds upon previous research (Bing, et al., 2015) which examined the causal sequence of events which can lead to a rail ...
  • Automated Train Operation Interface Requirements Specification Development Summary Report
    Automated Train Operation Interface Requirements Specification Development Summary Report
    Hunter, David C ;
    Bryant, Quinn
    2023-09-01 | PDF
    The Federal Railroad Administration contracted Transportation Technology Center, Inc. to define Interface Requirement Specification (IRS) documents for an Interoperable Train Control Automated Train Operation Support System Back Office (ITC-ATOSS BO). This project forms part of a larger Automated Train Operation (ATO) effort in cooperation with the ...
  • Load Environment Characterization of Tank Car Stub Sill During Revenue Operations
    Load Environment Characterization of Tank Car Stub Sill During Revenue Operations
    Martin, Timothy
    ORCID ICON IMG
    2023-09-01 | PDF
    Fractures in the stub sills of tank cars pose a significant problem for the rail industry due to the potential for damage to the tank structure and possible release of the contents. Previous FRA research revealed that high magnitude coupling forces that occur in yard operations have the potential to exceed yield limits of mild steel. A research tea ...
  • Bearing Grease Degradation Related to Water and Roller Bluing
    Bearing Grease Degradation Related to Water and Roller Bluing
    Clasby, Dustin
    ORCID ICON IMG
    2023-09-01 | PDF
    The Federal Railroad Administration sponsored a team from Transportation Technology Center, Inc. to conduct two investigations to improve the safety of roller bearing operations on railcars. The team conducted the research between September 2018 and April 2022 in collaboration with Burlington Northern Santa Fe Railway, Timken Company, and Amsted Ra ...
  • PTC Communications Cybersecurity Technology Review and Concept of Operations
    PTC Communications: Cybersecurity Technology Review and Concept of Operations
    Collins, Andy ;
    Stettner, Armando
    2023-08-12 | PDF
    Researchers sought to determine how to improve the confidentiality of information passing through the Positive Train Control network without significantly affecting network performance. Phase 1 of the project reviewed requirements and assessed existing technologies. Phase 2 focused on implementation, migration, and deployment challenges. A recommen ...
  • Augmented Reality for Railroad Operations Using Headup Displays
    Augmented Reality for Railroad Operations Using Head-up Displays
    Liu, Andrew M ;
    Oman, Charles M.
    2023-08-01 | PDF
    A team from MIT’s Human Systems Laboratory designed the locomotive HUD as a wide field of view augmented reality head-up display (AR-HUD). The technical feasibility of an AR-HUD was assessed through literature review and hardware tests. To study human factors issues, an AR-HUD prototype was designed, reviewed by experienced engineers, then implemen ...
  • Locomotive Crash Energy Management TraintoTrain Collision Test
    Locomotive Crash Energy Management Train-to-Train Collision Test
    DeGeorge, Matthew ;
    Gorhum, Travis
    2023-08-01 | PDF
    The Federal Railroad Administration (FRA) sponsored MxV Rail to conduct a collision test using both a moving and a stationary three-car consist. The moving consist included an EMD F40 passenger locomotive equipped with crash energy management (CEM) components backed by two M1-series passenger cars. The M1 passenger cars were also equipped for three ...
  • Autonomous Inspection System Based on Passive Sensing and Anomaly Detection
    Autonomous Inspection System Based on Passive Sensing and Anomaly Detection
    Yilmaz, Yasin ;
    Weller, Thomas
    2023-08-01 | PDF
    Detecting poor track conditions before they become safety-critical is essential for improving the safety and efficiency of railroads. To this end, autonomous track inspection technologies are beneficial, since established manual inspection methods are time-consuming and require significant track time windows. This report documents the initial inves ...
  • Modeling Track Mechanical Behavior With Under Tie Pads and Under Ballast Mats Research Results
    Modeling Track Mechanical Behavior With Under Tie Pads and Under Ballast Mats [Research Results]
    Stuart, Cameron ;
    Sussmann, Ted
    2023-07-01 | PDF
    Railroads have begun to use under tie pads (i.e., pads) and under ballast mats (i.e., mats) in railroad tracks to better distribute train loads, reduce track support stiffness, and increase tie-to-ballast contact area. Track locations with a shallow ballast layer and numerous tunnels and bridges are areas of stiff track support that may benefit fro ...
  • Development Length Variables in Pretensioned Concrete Ties Research Results
    Development Length Variables in Pretensioned Concrete Ties [Research Results]
    Stuart, Cameron ;
    Peterman, Robert J.
    2023-07-01 | PDF
    This research, conducted from 2011 to 2015, is part of a larger project, “Quantifying the Effect of Prestressing Steel and Concrete Variables on the Transfer Length in Pretensioned Concrete Crossties,” conducted by Kansas State University (KSU) and sponsored by the Federal Railroad Administration (FRA). This report highlights advances in quantifyin ...
  • Unsaturated Characteristics of Fouled Ballast to Support In Situ Identification of Fouling Using Ground Penetrating Radar Phase II
    Unsaturated Characteristics of Fouled Ballast to Support In Situ Identification of Fouling Using Ground Penetrating Radar – Phase II
    Kulesza, Stacey ;
    Barry, Michelle L
    2023-07-01 | PDF
    The Federal Railroad Administration funded researchers from Kansas State University and the University of Arkansas to establish the electromagnetic, suction, and strength characteristics of fouled ballast as a function of the fouling material and volumetric water content. The team previously established the unsaturated characteristics of various fo ...
  • Fully Scalable Train Braking Simulation Environment
    Fully Scalable Train Braking Simulation Environment
    Anaya, Rachel ;
    Pate, Shad
    2023-07-01 | PDF
    Transportation Technology Center, Inc. (MxV Rail), through a research project funded by 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 capabiliti ...
  • Torsional Strength and Stiffness of a Passenger Car Coupling System
    Torsional Strength and Stiffness of a Passenger Car Coupling System
    Trent, Robert ;
    Jang, Bora
    2023-06-29 | PDF
    Between September 2019 and June 2022, the Federal Railroad Administration (FRA) sponsored a research team from Sharma & Associates to model and test the torsional strength of a passenger car coupling system to understand the performance of coupling systems in train accidents and to enhance current specifications. The team designed a test fixture to ...
61 - 80 / 1162