Iowa Code § 321I.31
2004 Acts, ch 1132, §74; 2007 Acts, ch 141, §49, 50; 2012 Acts, ch 1050, § 43, 60; 2012 Acts, ch 1100, § 55; 2013 Acts, ch 132, § 55; 2013 Acts, ch 140, § 97; 2014 Acts, ch 1141, §67; 2019 Acts, ch 80, §2; 2023 Acts, ch 71, § 108
Subsection 3 amended