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52550
  
  

  8
Dec
2023
Technical Reports
PTC Communications: Cybersecurity Technology Review and Concept of Operations
Author
          Federal Railroad Administration

Subject
                    Positive Train Control,
                    Security

**Keywords:** Positive Train Control, PTC, railroad, shared network, Interoperable Train Control Messaging, ITCM, cybersecurity, encryption, National Institute of Standards and Technology, NIST, ELLI
**Abstract:** Researchers sought to determine how to improve the confidentiality of information passing through the...
Report Number
              DOT/FRA/ORD-23/39

  Office
              RDI-23
    9
Nov
2022
Research Results
Utilization of Unmanned Aerial Vehicles in Accident Reconstruction
Author
          Federal Railroad Administration

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossings

**Keywords:** Photogrammetry, accident reconstruction, grade crossing, railroad safety, highway-rail grade crossing, train control
**Abstract:** The Volpe National Transportation Systems Center evaluated the effectiveness of using UAVs and photogrammetry software to expedite the accident reconstruction process.
Report Number
              RR 22-37

  Office
              RDI-23
    29
Aug
2022
Technical Reports
Feasibility of a Train Horn with Optimized Directivity: Environmental and Occupational Noise Benefit of an Ideal Train Horn
Author
          Federal Railroad Administration

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossings

**Keywords:** Horn, noise, highway-rail grade crossing, safety, environment, occupational, detectability, acoustic hailing device, rolling stock, train horn
**Abstract:** This views the feasibility of and suggests an acoustical specification for an optimized horn. Decibel of the horn inside vehicles was compared to the optimized horn and several...
Report Number
              DOT/FRA/ORD-22/32

  Office
              RDI-22
    12
Apr
2022
Technical Reports
Intelligent Crossing Assessment and Traffic Sharing System (i-CATSS)
Author
          Federal Railroad Administration

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossings

**Keywords:** Crossing safety, crossing monitoring, first responders, delay time, train signal, artificial intelligence, train control
**Abstract:** Researchers developed i-CATSS to detect and predict highway-rail blockages and provide first responders with real-time information of traffic conditions at crossings.
Report Number
              DOT/FRA/ORD-22/15

  Office
              RDI-23
    11
Feb
2022
Technical Reports
Acoustical Warning Device for Locomotive Horns
Author
          Federal Railroad Administration

Subject
                    Grade Crossing Technology

**Keywords:** Acoustic Warning Device, AWD, air horn, variable directivity, grade crossing, sound beam steering, speaker array, locomotive, detectability, noise reduction
**Abstract:** This summarizes the R&D of a variable directivity Acoustic Warning Device (AWD) used as a locomotive horn and a GPS to control an arrangement of directional loudspeakers....
Report Number
              DOT/FRA/ORD-22/08

  Office
              RDI-22

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