(3) The regulations may declare that a specified public
authority is the roads authority for a specified public road, or for all
public roads within a specified area, other than any freeway or Crown road.
(4) The council of a local government area is the roads authority for all
public roads within the area, other than--
(a) any freeway or Crown road, and
(b) any public road for which some other public authority is declared by the
regulations to be the roads authority.
(5) A roads authority has such
functions as are conferred on it by or under this or any other Act or law.