Idaho Code § 49-218: Designation of authorized emergency vehicles.

The director of the Idaho state police shall designate any particular vehicle as an authorized emergency vehicle upon a finding that designation of that vehicle is necessary to the preservation of life or property, or to the execution of emergency governmental functions.

Any person who operates a motor vehicle in a manner which would lead one to reasonably believe it was an emergency vehicle without prior approval of the director of the Idaho state police, shall be guilty of a misdemeanor and shall be subject to a fine of not less than three hundred dollars ($300) and may be incarcerated for not more than thirty (30) days in jail for each occurrence.