Planning and design standards established for highways falling within the scenic and recreational highways system may include, but shall not be limited to, provision for the following:
(1) Hiking, bicycle, and bridle trails, including regulations for their use;
(2) Campsites and shelters;
(3) Boat launching sites;
(4) Access trails to lakes, rivers and streams, and easements along their shores;
(5) Safety rest areas;
(6) Historic and geologic interpretative facilities;
(7) Scenic observation facilities;
(8) Roadside landscaping, restoration and aesthetic enhancement;
(9) Specifically delineated highway corridors and means for the preservation of natural beauty, historic sites, or viewpoints;
(10) A uniform system of signs and markers designating the various features and facilities of the scenic and recreational highway systems.