1. The Director may designate appropriate locations for the construction of centers and the erection and maintenance of directional and informational signs within the right-of-way.
2. The signs or centers may be erected or constructed, sponsored, operated or maintained by:
(a) The Department;
(b) A city, county or other governmental agency, under contract with the Department; or
(c) A private person under contract with the Department, if the person has been authorized by the Director, with approval of the Board, to enter into such a contract.