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- Deer_horn abstract "A deer horn, or deer whistle, is a (whistle) mounted on automobiles intended to help prevent collisions with deer. A Shu-Roo is a similar device used in Australia to scare off kangaroos. Air moving through the device produces ultrasound or other high-frequency sound waves, intended to warn deer of a vehicle's approach. Deer are highly unpredictable, skittish animals whose normal reaction to an unfamiliar sound is to stop, look and listen to determine if they are being threatened.Scientific studies of these devices have indicated that they do not in fact reduce collisions.Researchers with the Georgia Game and Fish Department and University of Wisconsin–Madison have pointed out several reasons why these devices do not (and probably could not) work as advertised:Some deer whistles do not emit any ultrasonic sound under the advertised operating conditions (typically when the vehicle exceeds 30 mph).Ultrasonic sound does not carry very well. It does not travel a long enough distance to provide adequate warning, and also is stopped by virtually any intervening object, so any curves in a road will block the sound. Little is known about the auditory limits of deer, but current knowledge indicates that deer hear approximately the same frequencies as humans, and thus if humans can't hear a sound, deer probably can't either. If deer could hear ultrasound, it is unknown if it would alarm them or induce a flight response. Certainly if they heard it on a regular basis, they would get used to the sound and not react to it. In addition to the Georgia and Wisconsin studies, a study by the Ohio State Police Department also indicated the whistles are ineffective. Independent testing carried out by the Department of Zoology at the University of Melbourne reached the same conclusion about shu-roos and kangaroos.".
- Deer_horn wikiPageExternalLink deerwsle.html.
- Deer_horn wikiPageExternalLink iihs_advisory_31.pdf.
- Deer_horn wikiPageExternalLink rm970503.htm.
- Deer_horn wikiPageID "3147902".
- Deer_horn wikiPageLength "2638".
- Deer_horn wikiPageOutDegree "10".
- Deer_horn wikiPageRevisionID "636834792".
- Deer_horn wikiPageWikiLink Category:Automotive_safety_technologies.
- Deer_horn wikiPageWikiLink Category:Sound_production.
- Deer_horn wikiPageWikiLink Deer.
- Deer_horn wikiPageWikiLink Fight-or-flight_response.
- Deer_horn wikiPageWikiLink Georgia_Department_of_Natural_Resources.
- Deer_horn wikiPageWikiLink Insurance_Institute_for_Highway_Safety.
- Deer_horn wikiPageWikiLink Ultrasound.
- Deer_horn wikiPageWikiLink University_of_Melbourne.
- Deer_horn wikiPageWikiLink University_of_Wisconsin–Madison.
- Deer_horn wikiPageWikiLink Whistle.
- Deer_horn wikiPageWikiLinkText "Deer Whistles".
- Deer_horn wikiPageWikiLinkText "Deer horn".
- Deer_horn wikiPageWikiLinkText "deer horn".
- Deer_horn wikiPageUsesTemplate Template:Refimprove.
- Deer_horn wikiPageUsesTemplate Template:Reflist.
- Deer_horn subject Category:Automotive_safety_technologies.
- Deer_horn subject Category:Sound_production.
- Deer_horn type Redirect.
- Deer_horn type Technology.
- Deer_horn comment "A deer horn, or deer whistle, is a (whistle) mounted on automobiles intended to help prevent collisions with deer. A Shu-Roo is a similar device used in Australia to scare off kangaroos. Air moving through the device produces ultrasound or other high-frequency sound waves, intended to warn deer of a vehicle's approach.".
- Deer_horn label "Deer horn".
- Deer_horn sameAs Q5250858.
- Deer_horn sameAs שו-רו.
- Deer_horn sameAs m.08vhmh.
- Deer_horn sameAs Q5250858.
- Deer_horn wasDerivedFrom Deer_horn?oldid=636834792.
- Deer_horn isPrimaryTopicOf Deer_horn.