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Train crews may also sound their horns when there is a vehicle, person, or animal on or near the track, and the crew determines it is appropriate to provide warning. Crews may also sound the horn when. there are track or construction workers within 25 feet of a live track, or when gates and lights at the.
RAILROAD SIGNALS HOME. Whistles and horns played an important part in railroad history as much as any other railroad related device. They provide protection for trains that people can hear, as opposed to most of the other forms of signaling which require someone to SEE the warning or information.