(1) The national regulations may provide for the exemption of heavy vehicles from the requirement to be registered.
(2) An exemption under subsection (1) is a registration exemption.
(3) Without limiting subsection (1), the national regulations may prescribe matters about—
(a) the registration exemptions for categories of heavy vehicles; and
(b) the amendment, suspension or cancellation of registration exemptions; and
(c) the imposition, amendment or cancellation of the conditions (if any) to which a registration exemption is subject, whether any such condition is stated in, or is of a kind authorised to be made under, the national regulations.