S.D. Codified Laws § 19-19-406 : EVIDENCE — SOUTH DAKOTA RULES OF EVIDENCE — RELEVANCE AND ITS LIMITS —19-406 - Habit-Routine practice TEXT PDF Evidence of a person's habit or an organization's routine practice may be admitted to prove that on a particular occasion the person or organization acted in accordance with the habit or routine practice. The court may admit this evidence regardless of whether it is corroborated or whether there was an eyewitness. SDCL 19-19-406 SL 1979, ch 358 (Supreme Court Rule 78-2, Rule 406); SDCL § 19-12-8; SL 2016, ch 239 (Supreme Court Rule 15-28), eff. Jan. 1, 2016. SL 1979, ch 358 (Supreme Court Rule 78-2, Rule 406); SDCL § 19-12-8.