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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
Feb
2018
Research Results
Performance of Rail Fastening Systems on an Open-Deck Bridge
Author
          Federal Railroad Administration

Subject
                    Bridge and Structures Safety

**Keywords:** Rail fastening systems, track gage strength, bridges, open-deck bridges
**Abstract:** Transportation Technology Center, Inc. (TTCI) monitored the performance of rail fasteners on an open-deck bridge and its approaches, located at Norfolk Southern Corporation’s (...
Report Number
              RR 18-02

  Office
              RDI-21
    1
Sep
2017
Research Results
Bridge Approach Remedies Implemented at Western Mega Site
Author
          Federal Railroad Administration

Subject
                    Bridge and Structures Safety

**Keywords:** Heavy axle load (HAL), track transition, bridge approach
**Abstract:** As part of the heavy axle load (HAL) revenue service mega site testing program, the Transportation Technology Center, Inc. (TTCI) has worked closely with the Union Pacific...
Report Number
              RR 17-10

  Office
              RDI-21
    9
Jun
2015
Technical Reports
Campaign Monitoring of Railroad Bridges in High-Speed Rail Shared Corridors using Wireless Smart Sensors
Author
          Federal Railroad Administration

Subject
                    Bridge and Structures Safety

**Keywords:** Campaign Monitoring of Railroad Bridges in High-Speed Rail Shared Corridors using Wireless Smart Sensors; Railroad bridge safety; bridge performance monitoring; wireless sensors; campaign monitoring
**Abstract:** This research project used wireless smart sensors to develop a cost-effective and practical portable structural health monitoring system for railroad bridges in North America. The...
Report Number
              DOT/FRA/ORD-15/19

  Office
              RDI-21
    20
Feb
2013
Technical Reports
Characterization of Railroad Bridge Service Interruptions
Author
          Richard Joy, Mary Clara Jones, Duane Otter, and Luis Maal

Subject
                    Bridge and Structures Safety,
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** bridge problems, risk control matrix, Railroad Bridge Service Interruption Database
**Abstract:** The Federal Railroad Administration contracted Transportation Technology Center, Inc., to study bridge problems that cause accidents or service interruptions and to use this...
Report Number
              DOT/FRA/ORD-13/05

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              RRD

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