In Patrick Media Group, Inc. v. Department of Transportation, 533 Pa. 188, 620 A.2d 1125 (1993), the Pennsylvania Supreme Court indicated: The . . . Act was a legislative response to the Beautification Act of 1965 (Federal Act), 23 U.S.C. 131 et seq. The Beautification Act was intended to protect the public investment in the interstate and primary highway system, to promote the safety and recreational value of public travel, and to preserve our nation's natural beauty. 23 U.S.C. 131(a). . . . The . . . Act was intended by our legislature to protect the Commonwealth's interest in receiving federal-aid funds, and, at the same time, to further the national policy of highway beautification. Its goal was to limit the proliferation of advertising signs alongside our highways. See 36 P.S. 2718.102 (purposes of the Act). Id., 533 Pa. at 193, 620 A.2d at 1128.