(a) Abandoned signs. It shall be unlawful for any permittee or owner of a sign to fail or refuse to remove any sign, after ten days of the service of notice from the building official, which advertises a business or product which has not been conducted or sold at the premises where the sign is located for more than six consecutive months prior to the date of the notice from the building official. If the order to remove is not complied with, the building official may remove the sign, and a lien may be filed against the property for the expense incurred in removal of the sign.

(b) Hazardous signs. The building official shall refuse to issue a permit for any sign, which will constitute a hazard and a potential menace to the safety of the public, and he may require the removal of any sign which is not properly maintained or which is or will become unsafe and constitute a hazard to the safety of the public. It shall be unlawful for any permittee or owner to continue to display any sign that constitutes a hazard to the safety of the public. It shall be unlawful for any permittee or owner to continue to display any sign that constitutes a hazard after 48 hours from the time of notice by the building official requesting the removal of such sign, unless within that time, the permittee or owner shall have filed with the building official notice of his intention to appeal his decision to the code enforcement board. Any such sign displayed more than 48 hours after notice to remove the sign may be removed by the city at the expense of the permittee or owner, unless the matter is pending an appeal to the code enforcement board or unless the decision of the building official has been reversed by the code enforcement board.

(c) Signs constituting traffic hazard. No sign or other advertising structure as regulated by this chapter shall be erected at the intersection of any street in such a manner as to obstruct free and clear vision; at any location where, because of the position, shape or color, it may interfere with, obstruct the view of or be confused with any authorized traffic sign, signal or device; or which makes use of any word commonly used on traffic control signs or signals. Visibility at intersections shall be in accordance with figure 94-64-2.