South Australian Numbered Regulations South Australian Numbered Regulations73—Headlights to be fitted to vehicles
(1) A motor vehicle must be fitted with—
(a) 1 low-beam headlight if it is a moped, motor bike, or motor trike with 1 front wheel; or
(b) a pair of low-beam headlights if it has 4 or more wheels or is a motor trike, except a moped, with 2 front wheels.
(2) If a motor vehicle built after 1934 can travel at over 60 kilometres an hour—
(a) each low-beam headlight mentioned in subrule (1) must be able to work in the high-beam position; or
(b) the vehicle must be fitted with—
(i) 1 headlight that can work in the high-beam position if the vehicle is required to have 1 low-beam headlight; or
(ii) a pair of headlights that can work in the high-beam position.
(3) A motor bike may be equipped with a headlight modulation system that—
(a) varies the brightness of its high-beam headlight or low-beam headlight, but not both, at a rate of at least 200 and at most 280 flashes a minute; and
(b) is designed to operate only in the daylight.
(4) Up to 4 additional headlights may be fitted to a motor vehicle with 4 or more wheels, a motor bike or a motor trike.
(5) An additional headlight fitted to a vehicle must be fitted so that it faces forward and is symmetrical in relation to the centre-line of the vehicle.
Example—
