No person shall place, maintain or display or cause to be placed, maintained
or displayed any unofficial sign, signal or marking which purports to be,
resembles or is an imitation of an official traffic sign, signal or marking
which attempts to direct the movement of traffic or which hides from view
any official sign, signal or marking. The Chief of Police is hereby empowered
to remove without notice any unofficial sign, signal and marking which violates
this section.