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What Are Truck Air Horn Laws?

What Are Truck Air Horn Laws?

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Noise Pollution has been a general problem of society. From the irritable noise of the raging traffic to that caused by industrial facilities. Thus, laws were passed in order to minimize or regulate noise pollution. An example of this is the Truck Air Horn Law.

A truck air horn is usually installed on a variety of vehicles which include semi-trailer trucks, trains, and fire trucks. A truck air horn is an instrument used in order to forewarn other vehicles and people on the road that a truck is approaching. A truck air horn is likewise used in order to shoo wildlife from the highway. The sound that these devices produce is very loud that it can be used to give warnings even from afar.

Truck Air Horn

Truck Air Horn Laws

The sound that these truck air horns produce reaches about 80 to 90 decibels. In some research, it was proven that a 90 decibel sound can cause deafness. However, it was also proven that a 90-decibel noise can only cause said injury if the person is constantly exposed to the sound. Thus, laws were enacted to abate this noise in order to avoid causing injuries to the public. Truck Air Horn Laws are not only applicable to truck air horns. The law equally applies to sirens installed in vehicles.

Truck Air Horn Laws have been implemented in most states in the country. Most of these statutes were passed in the ’50s until the late ’70s. The main purpose of the law is to ensure that truck air horns are not used for any other purpose except to give a warning. Most of the Truck Air Horn Laws contain the same wordings since they have only been adopted by each state and incorporated as state law. Particularly, these laws:

  1. Prohibit the use of truck air horns on the highway

  2. Limit the use of the device to express warning alone

The act of blowing a car horn excessively or for purposes other than to give a warning is considered as an act of “honking”. “Honking” is penalized by way of the issuance of a ticket and the imposition of a fine. In several states, the fine imposed by state laws ranges from $75 to $1000. In some states, “honking” somebody else’s truck air horn is punishable.


Truck air horn manufacturers and distributors were made aware of these laws. Thus, they give ample warning to purchasers of the product. These warnings include the penalties prescribed by law if truck air horns are used recklessly on the highway.


This article contains general legal information but does not constitute professional legal advice for your particular situation. The Law Dictionary is not a law firm, and this page does not create an attorney-client or legal adviser relationship. If you have specific questions, please consult a qualified attorney licensed in your jurisdiction.

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