S.D. Codified Laws § 32-26-13
Current with legislation signed by the governor on or before 3/6/2024
When two vehicles approach or enter an intersection at approximately the same time, the driver of the vehicle on the left shall yield the right-of-way to the vehicle on the right except as otherwise provided in §§ 32-26-14 to 32-26-16, inclusive. The driver of any vehicle traveling at an unlawful speed shall forfeit any right-of-way which he might otherwise have hereunder. A violation of this section is a Class 2 misdemeanor.
SDCL 32-26-13