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52550
  
  

  7
Mar
2024
Technical Reports
External Perception for Locomotives: Systems and Algorithm Development
Author
          Federal Railroad Administration

Subject
                    Human Factors

**Keywords:** Deep learning, deep neural net, object detection, perception, cab technology integration lab, operator fatigue, operator distraction
**Abstract:** ...
Report Number
              DOT/FRA/ORD-24/13

  Office
              RDI-24
    9
Feb
2024
Technical Reports
Mechanistic Investigation of Timber Crosstie Spike Fastener Failures – Phase I: The Magnitude of the Spike Failure Challenge
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:**  track research, cut spikes, drive spikes, screw spikes, elastic fastening systems, failure analysis, broken spikes
**Abstract:** The Rail Transportation and Engineering Center (RailTEC) at the University of Illinois at Urbana-Champaign (UIUC) performed a literature review, conducted an industry-wide...
Report Number
              DOT/FRA/ORD-24-06

  Office
              RDI-21
    8
Dec
2023
Technical Reports
Stakeholder Perceptions of the Fatigue and Safety of Locomotive Engineers
Author
          Federal Railroad administration

Subject
                    Human Factors

**Keywords:** Fatigue, safety, locomotive engineers, conductors, focus groups, stakeholders
**Abstract:** This report documents stakeholder perspectives and opinions on the fatigue and safety of freight locomotive engineers. This work follows an online survey sponsored by the...
Report Number
              DOT/FRA/ORD-23/40

  Office
              RDI-24
    13
Sep
2023
Technical Reports
High-Strength, Reduced-Modulus, High-Performance Concrete for Prestressed Concrete Crosstie Applications
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Concrete, crosstie, weathered aggregate, granite, modulus
**Abstract:** High-performance concrete (HPC) with early strength development is the material of choice for fabricating prestressed concrete railroad ties. However, the higher strength of...
Report Number
              : DOT/FRA/ORD-23/26

  Office
              RPD-21
    7
Sep
2023
Technical Reports
Characterization of Track Geometry for Various Operational Conditions
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Track geometry, track quality, track irregularities, space curve, Automated Track Inspection Program, ATIP, Power Spectral Density, PSD, clustering
**Abstract:** This report characterizes the amplitude and wavelength content of the current track geometry environment of the United States railroad system and examines the combination of...
Report Number
              DOT/FRA/ORD-23/25

  Office
              RDI-22

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