(1) The administering authority for an infringement notice offence may delegate, in writing, all or any of the administering authority's functions under this Part to—
(a) the road transport authority; or
(b) a person prescribed under the regulations; or
(c) an authorised person.
(2) A person mentioned in paragraph (1) (a) or (b) may delegate, in writing, all or any of the functions delegated to the person under that subsection to anyone else.