(1)  A light motor vehicle must be fitted with at least one horn or other device that can give sufficient audible warning to other road users of the approach or position of the vehicle.

(2)  A light motor vehicle must not be fitted with a device that can make a sound like the sound of a siren, exhaust whistle, compression whistle or repeater horn.

(3)  Subregulation (2) does not apply to the following devices:

(a) a device fitted to an exempt vehicle;

(b) a device fitted to a vehicle that –

(i) is at least 25 years old; and

(ii) is fitted and modified to be –

(A) an emergency vehicle that is not a vehicle used by an electricity authority; or

(B) a police vehicle; and

(iii) is used for exhibition purposes only or as part of a collection of former emergency vehicles or police vehicles;

(c) a device that is an anti-theft device, if the device cannot be operated while the switch for the ignition of the vehicle is in the 'on' position;

(d) a device that emits a regular, intermittent sound while the vehicle is reversing or in reverse gear if the sound emitted by the device is not louder than is necessary to enable the driver, and persons near the vehicle, to hear the device when it is operating.

(4)  The provisions of the relevant ADR which corresponds to subregulation (2) apply to a vehicle as if those provisions of the ADR did not contain a reference to a bell.