A.  The city engineer is authorized to place official traffic-control devices within or adjacent to intersections and indicating the course to be traveled by vehicles turning at such intersections, and the city engineer is authorized to locate and indicate more than one lane of traffic from which drivers of vehicles may make right-hand or left-hand turns, and the course to be traveled as so indicated may conform to or be other than as prescribed by law, ordinance or resolution.

    B.  The city engineer is authorized to determine those intersections at which drivers of vehicles shall not make a right, left, or U-turn, and shall place proper signs at such intersections.

The making of such turns may be prohibited between certain hours of any day and permitted at other hours, in which event the same shall be plainly indicated on the signs, or they may be removed when such turns are permitted.  (Ord. 486 § 4 (part), 1992:  prior code § 13-5)