Heavy Vehicle National Law Act 2012

The national regulations may prescribe requirements (the prescribed dimension requirements) about the following—

the dimensions of a heavy vehicle (together with its equipment);

the dimensions of a component of a heavy vehicle;

the dimensions of a heavy vehicle’s load.

Without limiting subsection (1), the prescribed dimension requirements may include requirements about the following—

the dimensions of a heavy vehicle (together with its equipment) disregarding its load;

the dimensions of a heavy vehicle together with its equipment and load;

the dimensions by which a heavy vehicle’s load projects from the vehicle;

the internal measurements of a heavy vehicle, including, for example—

the distance between components of the vehicle; and

for a combination, the distance between—

the component vehicles of the combination; or

a component vehicle of the combination and a component of another component vehicle of the combination.

The national regulations may also prescribe requirements (that are not prescribed dimension requirements) about the use of a vehicle to which a dimension requirement applies, including, for example, requirements about the use of signs and warning devices.