Aaaww! Mr. Toad's Wild Ride (Disneyworld) was like that! So fun - your car would take you down the track until it ended in the final scene where you were staring at a train's main engine light coming straight for you! The sound of the train was loud - but not TOO loud. Just when you thought you would get run over by the train - the doors swung open and the ride was over. Whew! The effect was as much visual as audio. Loved that ride.Most incorporated towns and even HOAs have some sort of law about sound levels... it's not enforced unless someone reports you for it, most of the time.
I'd think it just being right out in the open would be too loud, but in the car would muffle it just enough to not cause hearing damage.
Reminds me of a great classic dark ride scare, tho. The one where you're walking down a hall/tunnel and suddenly there are HEADLIGHTS and a loud car horn coming RIGHT AT YOU!
(you could rig up something like that in a dark garage or something...)
You freakin betcha, that looks like a Hadley Bully air horn, (I got two in my jeeps) they did not name it the bully for nothing. Her is its spec;