S.D. Codified Laws § 32-22-5 (2026)
No motor vehicle may be operated upon a public highway if it has an overall length, inclusive of front and rear bumpers, in excess of forty-five feet. A violation of this section is a Class 2 misdemeanor.
Source: SDC 1939, § 44.0336 (2); SL 1943, ch 158 , § 1; SL 1947, ch 192 ; SL 1957, ch 222 ; SDC Supp 1960, § 44.0336 (2) (a); SL 1981, ch 244 , § 1; SL 1984, ch 230 , § 5; SL 2005, ch 169 , § 2.