South Australian Consolidated Regulations South Australian Consolidated Regulations (1) A motor vehicle
must be fitted with at least 1 horn or other device that can give sufficient
audible warning to other road users of the approach or position of the
vehicle.
(2) A 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) However, subrule
(2) does not apply to:
(a) a
police vehicle; or
(b) an
emergency vehicle; or
(f) a
vehicle at least 25 years old that is fitted as a police or emergency vehicle
if:
(i)
the vehicle is only used for exhibition purposes; or
(ii)
it is part of a collection of former police or
emergency vehicles; or
(g) an
anti-theft alarm if the alarm cannot be operated while the vehicle's ignition
is on.
(4) Also, a
motor vehicle may be fitted with a device that emits a regular, intermittent
sound while the vehicle is reversing or in reverse gear.
(5) The device must
not be louder than is necessary so the driver, and a person near the vehicle,
can hear the device when it is operating.
(6) The provision of
the relevant ADR that corresponds to subrule (2) applies to a vehicle as if
that provision did not contain a reference to a bell.