It shall be unlawful for any person to place or maintain or to display any device, other than an official warning or direction sign or signal erected under competent authority, upon or in view of a street which purports to be, or is an imitation of, or resembles, an official warning or direction sign or signal, or which attempts to direct the movement of traffic or the actions of operators, and any such prohibited device shall be a public nuisance and the Chief of Police may remove it, or cause it to be removed without notice.
('86 Code, § 11.08.050) (Ord. 2479, passed - - ) Penalty, see § 11.08.200