The purposes of this part and its specific objectives and standards are to:
(1) Provide for the recovery and conservation of natural scenic beauty along designated scenic highways;
(2) Provide a safe and attractive environment for tourists and travelers to enjoy the scenic beauty of the state;
(3) Maximize the potential of little used and bypassed sections of highway;
(4) Return economic viability to distressed areas through the promotion of tourism; and
(5) Provide for preservation of routes of historical significance in urban and rural areas of the state.