Northern Territory Consolidated Regulations Northern Territory Consolidated RegulationsA 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 millimetres forward of the rear of the trailer to which it is attached; and
(c) it is at a height of at least 800 millimetres, but not over 950 millimetres, when the road train is unloaded and parked on level ground.