20 ILCS 3905/1004

The State of Illinois, in carrying forward its duties to preserve or enhance the quality of this Parkway Corridor, may establish a program: (a) to formulate and enforce meaningful scenic easements; (b) to acquire, improve, maintain, manage, exchange, and consolidate available lands and easements and buildings for the best interests of the public; and (c) to adopt rules and performance standards, and to require permits for the installation and operation of facilities within the Parkway Corridor. However, any rules and performance standards promulgated under this Section shall recognize the validity of existing institutions and commercial business interests and their successors located within the Parkway Corridor, shall not adversely affect or restrict the operations of these business interests or their successors within the existing business facilities, and shall not restrict ingress to and egress from these business interests or their successors subject to the authority of the Department of Transportation.