6. For section 74 there shall be substituted the following section—
(1) It shall be the duty of the parking authority to set the levels of additional parking charges to apply in the permitted parking area and in the special parking area.
(2) Different levels may be set for different parts of the permitted parking area or, as the case may be, of the special parking area.
(3) The levels of additional parking charges set by the parking authority under this section shall accord with guidance given by the Secretary of State whether such guidance is given specifically to the parking authority or to local authorities generally.
(4) Guidance given by the Secretary of State under subsection (3) above may be varied at any time by the Secretary of State.
(5) The parking authority shall publish, in such manner as the Secretary of State may determine, the levels of additional parking charges which have been set under this section.
(6) In this section “additional parking charges” means penalty charges, charges made by the parking authority for the removal, storage and disposal of vehicles and charges for the release of vehicles from immobilisation devices fixed under section 69 of the Act.”