Ala. Code § 13A-8-71: Possession of Traffic Sign; Notification; Destruction, Defacement, Etc., of Traffic Sign or Traffic Control Device; Defacement of Public Building or Property.

(a) No person may unlawfully possess any traffic sign erected by the state, a county, or a municipality.

(b) Any person who voluntarily notifies a law enforcement agency of the presence on their property of a traffic sign shall not be guilty of violating the provisions of subsection (a).

(c) It shall be unlawful for any person to intentionally destroy, knock down, remove, deface, or alter any letters or figures on a traffic sign, or in any way damage any traffic control device, erected on a highway, public road, or right of way of this state, by the Department of Transportation, a county, or municipality.

(d) It shall be unlawful for any person to intentionally deface any public building or public property.