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52550
  
  

  12
Feb
2024
Research Results
Expansion of Rail Flaw Library at the Transportation Technology Center
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Rail, rail wear, rail defect, rail flaw library, ultrasonic testing, UT, phased array ultrasonic testing, PAUT, Miniprof, Rail Flaw Library of Associated Defects, RF-LOAD, non-destructive evaluation, NDE, track

Report Number
              RR 22-36

  Office
              RDI-21
    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
    11
Jan
2024
Policy and Guidance
Post-Accident Testing Criteria Flow Chart
Author
          Office of Railroad Safety

Subject
                    Drug and Alcohol Program,
                    Operating Practices

**Keywords:** post-accident testing; drug and alcohol testing, post, accident
**Abstract:** Post Accident Testing Criteria Flow Chart - Revised with Effective Date now
    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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