S.D. Codified Laws § 32-23-3
If conviction for a violation of § 32-23-1 is for a second offense, the person is guilty of a Class 1 misdemeanor, and the court must revoke the person's driver license for a period of not less than one year. Upon the successful completion of a court-approved chemical dependency program, and proof of financial responsibility pursuant to § 32-35-113, the court may permit the person to drive for the purposes of employment, 24/7 sobriety testing, attendance at school, child care delivery or pickup, health appointments, attendance at court or probation appointments, or attendance at counseling programs, treatment, or aftercare. If the person is convicted of driving without a license during that period, the court must sentence the person to the county jail for not less than three days, which sentence may not be suspended.
SDCL 32-23-3