S.D. Codified Laws § 32-15-18
Improperly loaded vehicle unlawful--Violation as misdemeanor
No person may drive or move any vehicle on any highway unless such vehicle is so constructed or loaded as to prevent its contents from dropping, sifting, leaking, or otherwise escaping therefrom. A violation of this section is a Class 2 misdemeanor.
Source: SDC 1939, § 44.0350; SL 1989, ch 255, § 34.