306B.3  Rules.
  The department shall promulgate and enforce rules consistent with the safety of the traveling public and in compliance with national policy governing the erection, maintenance, and frequency of advertising devices within six hundred sixty feet of the edge of the right-of-way of the interstate system which are authorized by this chapter and which are outside of commercial and industrial zones designated in section 306B.2, subsection 4.
[C66, 71, 73, 75, 77, 79, 81, §306B.3]