All vehicles on the road must be equipped with a horn that can be heard from a minimum of 200 feet away.
Vehicle Code
Every motor automobile shall be equipped with a horn which is in good working demand and qualified of emitting sound audible, under normal conditions, for a space of not less than two hundred feet.
Vehicles have a horn or a bell to alert people and let them know the vehicle is in the region. The horn is used to avert an accident. Drivers should be mindful that horns are put on as standard equipment in motor automobiles. A horn should be used in an crisis situation dictated by a driver's own choice.
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