SDCL § 31-7-17: Temporary rest stops permitted--Time limit.

No person temporarily resting in any vehicle is in violation of the provisions of § 31-7-15. For purposes of this section, temporarily resting means stopping, parking, or otherwise keeping or occupying any vehicle in a rest area, or any portion thereof not officially designated for camping, for not more than three consecutive hours or, if the driver of a commercial motor vehicle subject to the provisions of 49 C.F.R. Part 395, as of January 1, 2009, for not more than ten consecutive hours.