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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Whistles or horns are meant to alert the surrounding area and also traffic, civilian traffic or main-line locomotive traffic.
To a kid, it’s the way the train communicates with the people close enough to hear it. Some people may understand the trains language, but for the most part, it’s a stay off the tracks, I’m coming, is usually the message.
For 5 year olds and up, it’s various things. 3 whistles, I’m reversing, 2 whistles, I’m going forward. One long, exacerbated whistle for a tourist/excursion train taking passengers, I’ve stopped, and I wanna show off my new whistle we installed last week.
Each operating rail road company/excursion may have their own whistle system/signals, but there are some that share common signals.
2 longs, a short, and a long, locomotive is going through a crossing.
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