S.D. Codified Laws § 32-18-13 (2026)
Every vehicle described in § 32-18-1 and combination of vehicles, except motorcycles and motor-driven cycles, shall be equipped with parking brakes adequate to hold the vehicle on any grade on which it is operated, under all conditions of loading, on a surface free from snow, ice, or loose material. A violation of this section is a Class 2 misdemeanor.
Source: SL 1967, ch 197 , § 1 (b); SL 1968, ch 178 , § 2; SL 1989, ch 255 , § 76.