(A) It shall be unlawful for the driver of any vehicle, when passing premises on which school buildings are located and which are used for school purposes, during school recess or while children are going to or leaving school during the opening or closing hours, to drive the vehicle at a rate of speed in excess of 15 mph past the premises.
(B) The driver shall stop at all stop signs located at or near such school premises, and it shall be unlawful for the driver to make a U-turn at any intersection where such stop signs are located at or near such school premises.
Penalty, see § 71.999