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  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
    25
Aug
2020
Technical Reports
Trespasser Detection on Railroad Property Using Unmanned Aerial Vehicles
Author
          Federal Railroad Administration

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossings,
                    Trespass Countermeasures

**Keywords:** Highway-rail, grade crossing, humped crossing, photogrammetry, LiDAR
**Abstract:** This research focused on evaluating the applicability, limitation, and effectiveness of using unmanned aerial vehicles (UAVs, or “drones”) for trespass remote detection systems...
Report Number
              DOT/FRA/ORD-20/33

  Office
              RDI-23
    25
Aug
2020
Technical Reports
Trespasser Detection Systems on Railroad Rights-of-Way
Author
          Federal Railroad Administration

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossings,
                    Trespass Countermeasures

**Keywords:** Highway-rail, grade crossing, humped crossing, photogrammetry, LiDAR
**Abstract:** This research focused on evaluating the effectiveness of fixed ROW trespass remote detection systems and the integration of these systems with law enforcement dispatch...
Report Number
              DOT/FRA/ORD-20/34

  Office
              RDI-23

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