§47-11-206.

§47-11-206.
   
   (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 projects any flashing or
   revolving beams of light, or which hides from view or interferes with
   the effectiveness of any official traffic-control device or any
   railroad sign or signal, and no person shall place or maintain nor
   shall any public authority permit upon any street or highway any
   traffic sign or signal bearing thereon any commercial advertising;
   provided, however, that the governing board of any city or town may
   permit, under such conditions as the said board may deem proper,
   commercial or other advertising upon any traffic sign located on
   streets or highways within said city or town and not designated as
   either state or federal highways or extensions thereof.
   
   (b) 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.
   
   (c) Every such prohibited sign, signal or marking is hereby declared
   to be a public nuisance and the authority having jurisdiction over the
   highway is hereby empowered to remove the same or cause it to be
   removed without notice.