(a) The Secretary of Highways, with the approval of the Governor, is hereby authorized to declare any State highway route, or part thereof, now or hereafter established, to be a limited access highway.

(b) Whenever the establishment of a limited access highway will facilitate the movement of traffic the Secretary of Highways, with the approval of the Governor, is hereby authorized to lay out new highways, take over existing highways, or parts thereof, and declare the same to be a limited access highway to be constructed and maintained as a State highway.

(b.1) Whenever, in the opinion of the Secretary of Highways, movement of traffic will be facilitated upon routes connecting with routes of an adjoining state, he is hereby authorized, with the approval of the Governor, to lay out new highways, take over existing highways, or parts thereof, and declare the same to be limited access highways and to enter into agreements with the proper officials of such adjoining state, for the construction, reconstruction, maintenance and lighting of such highways and the connection of other Pennsylvania highways therewith. The cost of energizing and construction of lighting within the Commonwealth shall be borne by the Department of Highways.

(c) The authorities of any political subdivision of the Commonwealth are hereby authorized to declare any existing or new highway, or part thereof, now or hereafter under their jurisdiction and control, to be a limited access highway and to construct and maintain the same.

(d) The designation of a limited access highway in a city by either the Secretary of Highways or by the commissioners of the county in which the city is located shall be subject to the approval of the city as evidenced by an ordinance duly passed in accordance with the law. Such approval by a city shall in no way impose any liability upon the city for property damages occasioned by the designation of a limited access highway.