The rear overhang of a vehicle is the distance between the rear of the vehicle and the rear overhang line of the vehicle.
For a vehicle with an axle group at the rear comprising only 1 axle, the rear overhang line is a line running along the centre-line of the axle.
For a vehicle with an axle group at the rear comprising 2 axles, 1 of which is fitted with twice the number of tyres as the other, the rear overhang line is a line running parallel to the axles that is:
closer to the axle carrying the greater number of tyres than it is to the other axle; and
located at one-third of the distance between the 2 axles.
For a vehicle with an axle group at the rear that is not an axle group mentioned above, the rear overhang line is a line running parallel to the axles down the centre of the axle group.
If an axle group includes at least 1 steerable axle, that axle is to be disregarded unless:
the group comprises only 1 axle and that axle is a steerable axle; or
all the axles in the group are steerable axles.
Examples of rear overhang line—
