S.D. Codified Laws § 42-8-45.5 (2026)
The provisions of § 42-8-45.4 do not limit the introduction of any other competent evidence bearing upon the question whether or not the defendant was under the influence of an alcoholic beverage.
Source: SL 1992, ch 306 , § 7; SL 2012, ch 208 , § 5.