Eli5 My three year old boy wants to know why do trains whistle? And different times in there journey? We hear train whistles from our house.
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Before crossing intersections or areas the conductor thinks may have traffic. Unfortunately even tho we have cross gaurds and warnings and signs people will still try to cross over the tracks. The extra horn acts as a more prominent alarm.
Probably party for the conductors who don’t want to kill people, lose there job and party for insurance companies to say that the company did everything they could to prevent an accident.
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