4.—(1) Subject to paragraphs (2) and (3) a tramcar first brought into use before 1st January 1999 is authorised to be used for carriage on the Blackpool tramway even though—
(a)it does not conform with the provisions of the 2010 Regulations with which it would otherwise be required to conform; or
(b)it is used otherwise than in conformity with the provisions of the 2010 Regulations with which its use would otherwise be required to conform.
(2) The authorisation under paragraph (1) applies to a tramcar which is—
(a)used to demonstrate or operate an historical or special type of transport service; and
(b)used primarily for tourist, educational or recreational purposes.
(3) The authorisation under paragraph (1) only applies if passengers are permitted to board or alight from the tramcar solely at a designated heritage stop.