Most U.S. States Vehicle Codes only specify that a vehicle horn may not exceed the standard 110 decibels, or otherwise emit a harsh, or unreasonably loud sound. You may NOT equip, or otherwise replace your vehicles horn, with any siren, whistle, bell, or other type of audible warning device that is intended for emergency vehicle use only, if in fact your vehicle is NOT an emergency vehicle. (If you're a volunteer firefighter, check with your department for usage regulations.) I know of people who have substituted their vehicle horn for a boat horn-- that is, one that produces the same volume, but at a much higher pitch than a standard passenger car horn. Provided you don't abuse or "overuse" the horn, I doubt anyone in law enforcement will pay too much attention to your having it. For your State's Vehicle Code, which would outline the specifics for your own State, run a search in Google. Example: "Pennsylvania Motor Vehicle Inspection Code". Or call your local State Police Agency with questions.
In the UK, your car will fail it's MOT if it doesn't have a working horn. An valid MOT is a legal requirement you must have in order to tax and insure your car, thus making it illegal to drive without a working horn.
The requirements in Indiana are fairly strict. For the most part you're going to need full car insurance in order to stay legal.
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I invented the car horn
Push the car horn button....
What is the decibel level of a car horn?
If a Lincoln Town Car's horn whirls then the horn is broken and will need to be replaced. The horn is located in the bumper towards the front of the car.
Yes. Most people with cars today are thinking of changing their current horn to a truck horn by simply putting the horn at the back part of their car.
When a car horn goes off while the car is switched off, it means the horn has a bad ground.
Yes, in the sense "the horn of the car".
The Renault car does not come with a hot wired car horn. However, you can splice the wire and hot wire the horn yourself.
Honking a car horn is to bring forth the sound of a car horn close to its maximum audible level, to attract utmost attention.