Aside from turn signals, a car’s horn is really the only tool a driver has to communicate with other vehicles. (Besides gesticulating wildly out of the driver’s side window, of course.) It’s so loud and abrasive, however, that it always sounds like you’re screaming at other motorists, leading to middle fingers and…
Source: Gizmodo – How to Hack Your Car With a Nicer Horn That Won’t Instigate Road Rage