§ 70.21  DISPLAY OF UNAUTHORIZED SIGNS, SIGNALS OR MARKINGS.
   (A)   No person shall place, maintain or display upon or in view of any highway any unauthorized sign, signal, marking or device which purports to be or is an imitation of or resembles an official traffic-control device, sign or signal, or which attempts to direct the movement of traffic, or which hides from view or interferes with the effectiveness of any official traffic-control device, sign or signal.
   (B)   No person shall place or maintain nor shall any public authority permit upon any highway any traffic sign or signal bearing thereon any commercial advertising.
Penalty, see § 70.99