Municipalities and counties may establish posted school zones to regulate the traffic in the proximity of a school area. All traffic control devices used in school zones shall conform to a manual on traffic control for school areas adopted by the Department of Transportation. The manual shall provide a uniform system of warning, regulating, and guiding traffic through a school area. A municipality and county in the placement of traffic control devices as required by this section shall only be required to replace those currently used devices in the normal course of planned maintenance and replacement. Failure to obey such traffic control devices is a Class 2 misdemeanor.
SDCL 32-25-14.1