No signs authorized by this chapter shall be posted on any scenic highway, unless the county board of supervisors of the county in which the sign will be placed grants approval. Approval shall be given upon a modification of, and shall be consistent with, any existing corridor protection ordinance.
Source:
Section 229.20, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=SHC§ionNum=229.20..