No person shall use the hooter of a vehicle except when such use is necessary on the grounds of safety.

You may not use a light motor vehicle on a public road unless-

it is equipped with a warning device (hooter), which is in good working order and,

when used, capable of emitting a sound, which is clearly audible by a person of normal hearing from a distance of 90 metres.

Sirens or warning devices that play a tune may not be used in private vehicles.