Acoustical Warning Device for Locomotive Horns
This report summarizes the research and development of a variable directivity Acoustic Warning Device (AWD) used as a locomotive horn. A Global Positioning System (GPS) was developed to control an arrangement of directional loudspeakers. Loudspeakers are arranged on the locomotive so that sound is directed forward when the horn is initially sounded 1/4 mile from a grade crossing. Other loudspeakers are sounded approaching a crossing to direct sound more to the wayside. This approach reduces wayside noise and maintains horn detectability. The work took place at the Transportation Technology Center (TTC) with wayside sound levels comparing well to predicted patterns.
- Record URL:
- Record URL:
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Corporate Authors:
QinetiQ North America
350 Second Avenue
Waltham, MA United States 02451-1196Vanasse Hangen Brustlin, Incorporated
101 Walnut Street, P.O. Box 9151
Watertown, MA United States 02471-9151Federal Railroad Administration
Office of Railroad Policy and Development, 1200 New Jersey Avenue, SE
Washington, DC United States 20590Federal Railroad Administration
Office of Research, Development, and Technology
Washington, DC United States -
Authors:
- Campbell, Tom
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0000-0003-4228-9685
- Parida, Basant K
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0000-0003-1070-7475
- Ross, Jason C
- Publication Date: 2022-2
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report; Technical Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 83p
Subject/Index Terms
- TRT Terms: Acoustic equipment; Directivity pattern; Horns; Locomotives; Noise control; Railroad grade crossings; Warning devices
- Subject Areas: Railroads; Vehicles and Equipment;
Filing Info
- Accession Number: 01836099
- Record Type: Publication
- Report/Paper Numbers: DOT/FRA/ORD-22/08
- Contract Numbers: DTFR53-12-D-00003L, Task Order 0013
- Files: NTL, TRIS, ATRI, USDOT
- Created Date: Feb 17 2022 9:10PM