Effective 28 Aug 1969
304.331. Alteration or removal of traffic-control devices prohibited. — No person shall, without lawful authority, attempt to or in fact alter, deface, injure, knock down or remove any official traffic-control device or any railroad sign or signal or any inscription, shield or insignia thereon, or any other part thereof.
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(L. 1969 S.B. 180 § 7)