The city traffic engineer is hereby authorized to determine those intersections at which drivers of vehicles shall not make a right, left, U-turn or right turn on red, 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.

(Code 1964, § 12.305)

     State law reference(s)--Similar provisions, RSMo. § 300.225.