S.D. Codified Laws § 32-30-2.4
The Department of Transportation with respect to highways under its jurisdiction may promulgate rules pursuant to chapter 1-26 to prohibit or restrict the stopping, standing, or parking of vehicles or the presence of any person standing outside of a motor vehicle, on any highway or highway right-of-way if such stopping, standing, parking, or presence of any person standing is dangerous to those using the highway or if the stopping, standing, or parking of vehicles or the presence of persons outside of a motor vehicle would unduly interfere with the free movement of traffic on the highway. If such a rule is promulgated, the highway shall be signed to indicate where such stopping, standing, or parking is prohibited. The secretary of transportation may establish a temporary no parking zone, not to exceed ninety days, if the secretary of public safety and the secretary of transportation, after consultation with the director of the highway patrol, agree that a no parking zone is necessary for the protection of life and property. The signs are official signs and no person may stop, stand, or park any vehicle or stand outside a motor vehicle in violation of the restrictions stated on the signs. A violation of this section is a Class 2 misdemeanor.
SDCL 32-30-2.4