New South Wales Consolidated Acts(cf Roads Act, s 112)
(1) The council of a local government area or the Authority may do either or both of the following things:(a) it may, by means of notices conspicuously displayed on or adjacent to a road or any bridge or causeway forming part of a road, prohibit vehicles with a laden mass exceeding a specified maximum mass from passing along or over the road, bridge or causeway,(b) it may, by means of notices conspicuously displayed on or adjacent to a road or any road-ferry maintained in connection with a road, prohibit vehicles with a laden mass exceeding a specified maximum mass from using the road-ferry.
(2) Despite subsection (1) (a), the regulations may prescribe circumstances in which a notice displayed in accordance with that paragraph does not operate to prohibit a vehicle passing along or over a road, bridge or causeway.
(3) The powers conferred by this section may only be exercised with respect to classified roads by the Authority.
(4) Any person who fails to comply with the terms of a notice displayed for the purposes of this section is guilty of an offence.Maximum penalty: 30 penalty units.
(5) In this section, "classified road" has the same meaning as it has in the Roads Act 1993 .