SDCL § 32-12A-61: Disqualification for third or subsequent grade crossing conviction.

Any person is disqualified from driving a commercial motor vehicle for a period of one year if convicted during any three-year period, while driving a commercial motor vehicle, of a third or subsequent conviction or any combination of convictions of § 32-29-4, 32-29-5, 32-29-7, 32-29-8, 32-29-9, or 32-29-12 in separate incidents.