South Dakota: Highway Patrol, Pierre, SD. 605-773-3105.
SDCL 32-15-18. Improperly Loaded Vehicle Unlawful.
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.