15. Regulation 31 (Driver's accommodation) shall not apply—
(a)in so far as it consists of sub-paragraphs (b) and (e) in the case of a vehicle registered before 1st April 1959;
(b)in so far as it consists of sub-paragraph (d) in the case of a vehicle registered before 1st April 1959 if means are provided (where necessary) to prevent light from the interior of the vehicle from incommoding the driver; and
(c)in so far as it consists of sub-paragraphs (g) and (h) in the case of a vehicle registered before 1st April 1959.