S.D. Codified Laws § 32-12A-31 (2026)
Each person applying for renewal of a commercial driver license shall complete the application form required by § 32-12A-14, providing updated information and required certifications. If the applicant wishes to retain a hazardous materials endorsement, the written test for a hazardous materials endorsement shall be taken and passed. Each license is renewable one hundred eighty days prior to its expiration.
Source: SL 1989, ch 267 , § 22; SDCL § 32-12-103; SL 2001, ch 171 , §§ 94, 115.