(a) The Director of Transportation is authorized to so design any controlled access facility and to so regulate, restrict, or prohibit access as to best serve the traffic for which such facility is intended. In this connection, such highway authority is authorized to divide and separate any controlled access facility into separate roadways by the construction of raised curbing, central dividing sections or other physical separations or by designating such separate roadways by signs, markers, stripes, and the proper lane for such traffic by appropriate signs, markers, stripes, and other devices. No person shall have any right of ingress or egress to, from or across controlled access facilities to or from abutting lands, except such designated points at which access may be permitted or service roads provided, upon such terms and conditions as may be specified from time to time.

(b) Except to the extent authorized by law for toll roads, no automotive service station or other commercial establishment for serving motor vehicle users shall be constructed or located within the right-of-way of or on publicly owned or publicly leased land acquired or used for, or in connection with, the controlled access facility; provided, that this shall not limit the powers granted to the Department of Conservation and Natural Resources by Sections 9-2-9, 9-2-10, 9-2-100, 9-2-101, 9-2-103 through 9-2-108, 9-14-1 through 9-14-6 and 9-14-20 through 9-14-29, when those powers are exercised in accordance with the purposes of such provisions.