(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, or 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) Every prohibited sign, signal, or marking is declared to be a public nuisance, and the authority having jurisdiction over the highway is empowered to remove the same, or cause it to be removed without notice.
(D) No person shall sell or offer for sale any traffic-control device to be used on any street or highway in this city which does not conform to the requirements of this chapter.
(E) This section shall not be deemed to prohibit the erection upon private property adjacent to highways of signs giving useful directional information, and of a type that cannot be mistaken for official signs.
(ILCS Ch. 625, Act 5, § 11-310) Penalty, see § 70.99