Western Australian Consolidated Regulations (1) A motor vehicle
fitted with front clearance lights may also have additional forward-facing
lights on or above the roof of its cabin.
(2) The additional
forward-facing lights must be spaced evenly between the front clearance
lights, with their centres at least 120 mm apart.
(3) When on, an
additional forward-facing light must —
(a) show
a yellow or white light; and
(b) not
use over 7 watts power.