Western Australian Consolidated Regulations Western Australian Consolidated Regulations (1) In this
rule —
ground clearance of a vehicle, means the minimum
distance to the ground from a point on the underside of the vehicle, except a
point on a tyre, wheel, wheel hub, brake backing plate or flexible mudguard or
mudflap of the vehicle.
(2) A motor vehicle
must have a ground clearance of —
(a) at
least 100 mm at any point within 1 m of an axle;
(b) at
least one-thirtieth of the distance between the centres of adjacent axles at
the midpoint between them; and
(c) at
any other point — at least the distance that allows the
vehicle to pass over a peak in the road with a gradient on either side of
1:15, if the wheels of one axle of the vehicle are on the slope on one side of
the peak and the wheels of the next axle are on the slope on the other side.
(3) However,
subrule (2) does not apply to —
(a) a
motor vehicle with less than 4 wheels; or
(b) a
combination that includes a motor vehicle with less than 4 wheels.
Ground clearance at the midpoint between 2 axles
Ground clearance over a peak in the road