S.D. Codified Laws § 32-22-19 (2026)
Any combination of vehicles being operated upon the public highways shall, for the purposes of § 32-22-16, be deemed to be a single vehicle.
Source: SDC 1939, § 44.0336 (6) (e) as added by SL 1953, ch 234 ; SL 1957, ch 223 , § 2; SL 1959, ch 260 , § 2; SL 1980, ch 226 , § 9.