A horn is a sound-making device installed on motor vehicles, trains, boats, and other types of vehicles. The sound it makes usually resembles a "honk" or a "beep". The driver uses the horn to warn oth
The single reed bulb horn was popular on early automobiles.
Horn of a 1926 Rolls-Royce Phantom I Open Tourer Windovers
Modern electric horns mounted in engine compartment
The Leslie S5T, a locomotive air horn with five 'chimes'
A bicycle bell is a percussive signaling instrument mounted on a bicycle for warning pedestrians and other cyclists. They are usually mounted on the handlebars and thumb activated.
Vehicle horn
…The song Runnin' With The Devil by Van Halen opens with a recording of car horns that swells to a crescendo and then is slowed down to drop the pitch. Bicycle bell Civil defense siren…
Silver bicycle bell mounted on handlebar
Bicycle bell mounted on the stem
Bicycle bell internal view
Bicycle bell with external clapper