16. Where a motor vehicle first used on or after 24th January 1996 or any trailer manufactured on or after 24th January 1996 is equipped with any lamp of a type that is required by any Schedule to these Regulations to be marked with an approval mark, no filament lamp other than a filament lamp referred to in the Designation of Approval Marks Regulations in—
(a)regulation 4 and Schedule 2, items 2 or 2A, 8, 20, 37 or 37A; or
(b)regulation 5 and Schedule 4, item 18,
to those Regulations, shall be fitted to any such vehicle.