S.D. Codified Laws § 32-9-17.2
The department or its agent shall refuse to issue a registration, license plate, permit, or a certificate of title or to transfer any title on a vehicle licensed under chapter 32-9 or 32-10 if a motor carrier fails to disclose material information required, if the motor carrier has made a materially false statement on the application, or if the motor carrier's business is operated, managed, or otherwise controlled or affiliated with a person who is ineligible for registration, including the applicant, owner, relative, corporate officer, or shareholder. The department shall deny registration for a vehicle assigned to a motor carrier that has been taken out of service by the Federal Motor Carrier Safety Administration for safety reasons, or a carrier whose business is operated, managed, or otherwise controlled or affiliated with a person who is ineligible for registration, including the applicant, owner, relative, corporate officer, or shareholder.
The term, relative, as used in this section, means husband, wife, son, daughter, brother, sister, father, mother, brother-in-law, sister-in-law, father-in-law, mother-in-law, son-in-law, or daughter-in-law.
If the prohibition by the Federal Motor Carrier Safety Administration is rescinded, the department or its agent may issue a registration, license plate, permit, or a certificate of title to the vehicle provided all other taxes and fees have been paid to the department.
SDCL 32-9-17.2