93. After Article 50 of the Order of 1981 (general speed limit on certain roads) there shall be inserted the following Article—
50A.—(1) The Department may make regulations with respect to—
(a)the maximum speed of motor vehicles;
(b)the maximum speed of classes of vehicles while being driven on special roads within the meaning of the Roads (Northern Ireland) Order 1993.
(2) The powers conferred by this Article are in addition to and not in derogation of the powers conferred on the Department by Article 27 and the powers conferred by paragraph (1)(a) shall, without prejudice to section 17(5) of the Interpretation Act (Northern ireland) 1954(1), include power to make regulations with respect to the maximum speed of motor vehicles of different classes on any class, description, length or part of a road specified in the regulations.”