"I'm just curious what is the purpose of a raised horn?"
(comments)
MP: "The early raised horns were done that way to allow the horn to clear a rooftop air conditioner, rotating light or similar obstacle. Union Pacific used raised horns back between the fans to keep them from building up ice in the winter."
MW: "Hmm... I always thought it was for forward volume projection..."
BK: "Sometimes it's to get clearance on the cab without moving the airlines and horn mount."
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