 
  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.
[1967 ex.s. c 85 § 5.]