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2. Vehicle horn - Wikipedia

   en.wikipedia.org/wiki/Vehicle_horn

   Again, these horns can be either single, or arranged in pairs; typical frequencies for a pair are 420–440 Hz and 340–370 Hz (approximately G ♯ 4 –A 4 and F 4 –F ♯ 4) for this design. Diagram showing how a car horn works. A horn grille is a part of some designs of car or other motor vehicle that has an electric horn, such as a motor ...

3. Train horn - Wikipedia

   en.wikipedia.org/wiki/Train_horn

   The Nathan model M5 pictured is a 5 chime horn. A train horn is an air horn used as an audible warning device on diesel and electric-powered trains. Its primary purpose is to alert persons and animals to an oncoming train, especially when approaching a level crossing. They are often extremely loud, allowing them to be heard from great distances.

4. Nathan Manufacturing - Wikipedia

   en.wikipedia.org/wiki/Nathan_Manufacturing

   Nathan Manufacturing, Inc. is a division of Micro Precision Group which manufactures Airchime, Ltd. train horns mainly for North America. It is one of two major train horn manufacturers in the United States, with Leslie Controls, Inc. being the other. A K5LA (K-5LA) Horn on top of a Coaster San Diego Cabcar #2310.

5. Can you blow your horn at other drivers for any reason? What ...

   www.aol.com/blow-horn-other-drivers-reason...

   The horns on motor vehicles are there for safety’s sake. The Florida Driver’s Handbook specifies that a vehicle must have a horn which can be heard from a distance of 200 feet.

6. Brightline trains: How loud are horns compared to FEC ... - AOL

   www.aol.com/brightline-trains-loud-horns...

   FEC and Brightline train horns are equally loud — about 118 decibels, according to a decibel meter TCPalm staff used while standing about 10 feet from the railroad tracks in downtown Fort Pierce ...

7. Train noise - Wikipedia

   en.wikipedia.org/wiki/Train_noise

   Rail squeal is a sound caused by a train's wheels slipping under specific conditions, usually around sharp curves. [4] Air displacement of a train in a tunnel can create noise from turbulence. Trains also use horns, whistles, bells, and other noise-making devices for both communications and warnings.