(A) 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 §§ 71.008, 71.051 and 71.053.
(B) The driver of any vehicle traveling at an unlawful speed shall forfeit any right-of-way which he or she might otherwise have.
(SDCL § 32-26-13) Penalty, see § 70.99