Western Australian Current Regulations Western Australian Current Regulations A drawbar‑type
coupling or drawbar eye used in a road train must be built and positioned
so —
(a) when
the road train is moving, the drawbar can move at least 15° upwards or
downwards from the position it occupies when the road train is parked on level
ground; and
(b) the
pivot point of the coupling is not over 300 mm forward of the rear of the
trailer to which it is attached; and
(c) it
is at a height of at least 800 mm, but not over 950 mm, when the
road train is unloaded and parked on level ground.