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52550
  
  

  8
Oct
2019
Technical Reports
Acoustical Warning Devices as Emergency Warning Systems, Phase 1
Author
          Federal Railroad Administration

Subject
                    Emergency Notification Systems,
                    Grade Crossing Technology

**Keywords:** Emergency warning, train horn, trespassers, music masking sounds, reaction time, acoustic warning device
**Abstract:** Acoustical warning devices are designed to warn trespassers of an approaching train. This study evaluated the urgency and detectibility of potential warning sounds.
Report Number
              DOT/FRA/ORD-19/40

  Office
              RDI-23
    23
May
2019
Technical Reports
Fiber Optic Train Tracking - Phase 1
Author
          Federal Railroad Administration

Subject
                    Fiber Optic

**Keywords:** Fiber Optic Acoustic Detection, FOAD, fiber optic, testing, North American railroad, train tracking
**Abstract:** The Federal Railroad Administration (FRA) contracted Transportation Technology Center, Inc. (TTCI) to test the train tracking capabilities of fiber optic acoustic detection (FOAD...
Report Number
              DOT/FRA/ORD-19/14

  Office
              RDI-23
    19
Apr
2019
Research Results
Fiber Optic Train Tracking - Phase 1
Author
          Federal Railroad Administration

Subject
                    Fiber Optic

**Keywords:** North American railroads, Fiber Optic Acoustic Detection, FOAD, fiber optic, wayside detection, safety
**Abstract:** The Federal Railroad Administration (FRA) sponsored a test conducted by Transportation Technology Center, Inc. (TTCI), in September 2017, to evaluate the capability of Fiber-...
Report Number
              RR 19/12

  Office
              RDI-23
    8
Apr
2019
Technical Reports
Railroad Test Track (RTT) Fiber Optic Acoustic Test Bed Expansion
Author
          Federal Railroad Administration

Subject
                    Fiber Optic

**Keywords:** Fiber Optic Acoustic Detection, FOAD, fiber optic, test bed, Railroad Test Track, RTT
**Abstract:** he Federal Railroad Administration (FRA) funded an expansion of the Railroad Test Track (RTT) Fiber Optic Acoustic Detection (FOAD) test bed. This test bed was designed for...
Report Number
              DOT/FRA/ORD-19/07

  Office
              RDI-23
    29
Nov
2018
Technical Reports
Evaluation of Fiber Optic Broken Rail Detection Systems : Appendices A Through B
Author
          Federal Railroad Administration

Subject
                    Fiber Optic

**Keywords:** Broken rail detection evaluation, fiber optic, Distributed Acoustic Sensing, DAS, track circuits
**Abstract:** Appendix A: TTCI have run a 25-week trial at the Facility for Accelerated Service Testing (FAST) site near Pueblo, Colorado, in which several fiber optic acoustic detection (FOAD...
Report Number
              DOT/FRA/ORD-18/37

  Office
              RDI-23

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