36.—(1) Subject to the provisions of this Part, it shall not be lawful for any person to drive a motor vehicle on a restricted road at a speed exceeding 30 miles per hour.
(2) The Department may by order subject to affirmative resolution increase or reduce the speed fixed by paragraph (1) either as originally enacted or as varied under this paragraph.
(3) The Department may by order provide that at times, on days or during periods specified in the order, paragraph (1) shall not apply—
(a)as respects any length of road specified in the order; or
(b)generally.
(4) Schedule 5 (which makes further provision relating to orders under paragraph (3)(a) and Articles 37 and 38) shall have effect.