(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 or railroad sign or signal, or which attempts to direct the movement of traffic, nor shall any person place, maintain or display upon or in view of any highway any other sign which hides from view or interferes with the movement of traffic or the effectiveness of any traffic control device or any railroad sign or signal.
(b) No person may place or maintain nor may any public authority permit upon any highway any traffic sign or signal bearing thereon any commercial advertising.
(c) Any such unauthorized device is hereby declared to be a public nuisance, and may be removed by any police officer.
(M.C. 1963, § § 20.110 and 20.111.)