§ 70.036  INTERFERENCE  WITH  OFFICIAL  TRAFFIC-CONTROL  DEVICES  OR RAILROAD SIGNS OR SIGNALS.
   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.
(ILCS Ch. 625, Act 5, § 11-311)  (1999 Code, § 70.36)  Penalty, see § 70.999