21-515 MARKING OF HAZARDS TO AIR FLIGHT.
AERONAUTICS
CHAPTER 5
AIRPORT ZONING ACT
21-515. Marking of hazards to air flight. Any structure when determined by the director of the Idaho transportation department to be a hazard or potential hazard to the safe flight of aircraft shall be plainly marked, illuminated, painted, lighted or designated in a manner to be approved by the director, so that the same will be clearly visible to airmen.