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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.
Under the Train Horn Rule, locomotive engineers must sound train horns for a minimum of 15 seconds, and a maximum of 20 seconds, prior to entering crossings. Wherever feasible, train horns must be. sounded in a standardized pattern of 2 long, 1 short, and 1 long. The horn must continue to sound until.