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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.
In the United States, train horns are required to have a minimum sound level of 96 dB and a maximum sound level of 110 dB at 100 ft (30 m) in front of the train. To distinguish their sound from truck and bus air horns, train horns in the U.S. consist of groups of two to five horns (called "chimes") which have different notes, sounded together ...
After an accident in which a driver mistook a train for a truck, the need for a unique-sounding train horn became clear. [1] Consequently, North American trains now have at least two horns with different tones forming the airhorn, that sound simultaneously, [ citation needed ] creating a harmonic interval or chord .
The sound of those horns echo throughout the city daily — white noise to some, but a nuisance to others, especially those who live near tracks. Columbia began weighing the cost of creating ...
The Federal Railroad Administration requires local governments to take a number of steps before they can apply for train horn quiet zones. ... from the requirement that horns sound for 15-20 ...
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This is an accepted version of this page This is the latest accepted revision, reviewed on 14 January 2025. This is a list of onomatopoeias, i.e. words that imitate, resemble, or suggest the source of the sound that they describe. For more information, see the linked articles. Human vocal sounds Achoo, Atishoo, the sound of a sneeze Ahem, a sound made to clear the throat or to draw attention ...
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.
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