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2. Train horn - Wikipedia

   en.wikipedia.org/wiki/Train_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.

3. Train noise - Wikipedia

   en.wikipedia.org/wiki/Train_noise

   Several distinct sounds are created by various parts of the train, such as engines, traction motors, brakes, and the wheels rolling on the rails. Roughness and irregularities on the wheel and rail surfaces are a source of noise and vibration. Rail joints and squats on the rail cause a familiar "clickety-clack" sound as train wheels roll over them.

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

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

   Sounds at 120 decibels, comparable to an emergency vehicle siren, may cause discomfort to human hearing, according to the National Council on Aging. Brightline trains: How loud are horns compared ...

5. Automatic Warning System - Wikipedia

   en.wikipedia.org/wiki/Automatic_Warning_System

   The one-second delay before the horn sounds allows the system to operate correctly down to speeds as low as 1 + 3 ⁄ 4 mph (2.8 km/h). Below this speed, the caution horn warning will always be given, but it will be automatically cancelled when the electromagnet resets the system if the driver has not already done so.

6. Quieting Columbia train horns is closer to reality. Here’s ...

   www.aol.com/quieting-columbia-train-horns-closer...

   The first phase of a would-be railroad quiet zone Columbia City Council is hoping to establish. In a quiet zone, a train would only sound its horn in times of emergency, rather than each time it ...

7. Why do train horns use this pattern? History’s unclear, but ...

   www.aol.com/why-train-horns-pattern-history...

   For nearly 200 years, train whistles have been a tool to warn folks to stay off the tracks. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...