The police department, with the approval by resolution of the mayor and council, may designate those portions of any street or roadway where overtaking and passing or driving on the left side of the street or roadway would be a special hazard, to be known as "no passing zones", may designate any street, alley or separate roadway within the city for one-way traffic, and may designate any street or roadway or portion thereof within the city where parking on all or any part of the street or roadway may be prohibited either all of the time or within certain designated hours. When appropriate signs are erected, such designations shall be effective at all times thereafter. (Ord. 744, 7-28-2009)