Air horns are widely employed as vehicle horns, installed on large semi-trailer trucks, fire trucks, trains, and some ambulances as a warning device, and on ships as a signalling device.
•
Additionally, air horns (especially those that contain fluorocarbons) have the potential to be used as recreational drugs since many such refrigerants can be inhaled for a quick and dangerous intoxication.
United States Air Force | Royal Air Force | United States Army Air Forces | Royal Canadian Air Force | Indian Air Force | United States Air Force Academy | Special Air Service | Fleet Air Arm | National Air and Space Museum | Royal Australian Air Force | Strategic Air Command | Delta Air Lines | Air Canada | Israeli Air Force | International Air Transport Association | Air Training Command | United States Army Air Corps | French Air Force | Air National Guard | Edwards Air Force Base | Air Education and Training Command | Air France | Cape Horn | Royal Naval Air Service | First Air Force | South African Air Force | Wright-Patterson Air Force Base | Air Ministry | Wacken Open Air | Civil Air Patrol |
In 1955 the SAR introduced its Bluebird and Redhen railcars, and therefore the "Barwell Bulls"-nicknamed after the then Premier of South Australia and the sound that the air horn emitted-were eventually moved to suburban services in Adelaide and its surrounding suburbs.