(A)   Every sign erected pursuant to this subchapter shall bear the word "stop" in letters not less than six (6) inches in height.  The sign shall at night be rendered luminous by steady or flashing interval illumination, or by a fixed floodlight projected on the face of the sign, or by efficient reflecting elements on the face of the sign.  Every stop sign shall be located as near as practicable at the nearest line of the roadway.
   (B)   Except when directed to proceed by a police officer, every operator of a vehicle approaching a stop sign shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or, if none, then at the point nearest the intersecting roadway where the operator has view of approaching traffic on the intersecting roadway before entering it.  After having stopped the operator shall yield the right-of-way to any vehicle in the intersection or approaching on another roadway so closely as to constitute an immediate hazard during the time when the operator is moving across or within the intersection or junction of roadways. 
(KRS 189.330(4))  Penalty, see § 40.999