S.D. Codified Laws § 32-25-10 (2026)
The transportation commission may change the speed limit or the extent of any limited speed zone established under § 32-25-7 at any time it may deem necessary.
Source: SL 1941, ch 187 , § 1; SL 1955, ch 168 ; SL 1959, ch 251 , § 1; SDC Supp 1960, § 44.0303 (5); SL 1985, ch 259 , § 4.