New Jersey Administrative Code
Title 13 - LAW AND PUBLIC SAFETY
Chapter 20 - ENFORCEMENT SERVICE
Subchapter 33 - INSPECTION STANDARDS AND TEST PROCEDURES TO BE USED BY LICENSED PRIVATE INSPECTION FACILITIES
Section 13:20-33.9 - Commercial vehicle inspection: horn

1. A horn which is inoperable;

2. A horn which is not audible under normal conditions from a distance of not less than 200 feet;

3. A horn which is not securely fastened to the motor vehicle;

4. A horn which has a broken button or switch, or a horn which does not have a button or switch. (For example, a horn which is activated by grounding a bare wire shall not be certified.);

5. A horn which has an activating button or switch beyond the reach of the driver;

6. A horn button which is located in a place that is not readily conspicuous to the driver, or a horn button which requires the driver to take his or her eyes off of the road to activate the horn;

7. A horn ring which is broken so as to be likely to cause injury or to snag clothing; or

8. A motor vehicle which is equipped with a siren, whistle, or bell (except an authorized emergency vehicle or unless a permit for same has been issued by the Chief Administrator in accordance with N.J.A.C. 13:24); provided, however, that any motor vehicle may be equipped with a theft alarm signal device which is installed so that it cannot be used by the driver as an ordinary warning signal.

1. A horn which emits an unreasonably loud or harsh sound. An unreasonably loud horn, such as an air horn, is permitted on a motor vehicle, provided the motor vehicle is also equipped with a standard horn for use in residence or business districts; or

2. A horn which can only be sounded by a portion of the horn activation device.