A. The state department of highways as regards state and federal highways, and the police chief as regards all other streets, are hereby authorized to determine those portions of a highway where overtaking and passing or driving to the left of the roadway would be especially hazardous, and may by appropriate signs or markings on the roadway have the beginning and end of such zones indicated, and when such signs or markings are in place and clearly visible to an ordinarily observant person, every driver of a vehicle shall obey the directions thereof.
B. Where signs or markings are in place to define a no passing zone as set forth in subsection A of this section, no driver shall at any time drive to the left side of the roadway within such no passing zone or on the left side of any pavement striping designed to mark such no passing zone throughout its length. (2001 Code § 71.030)