Iowa Code § 257.1
89 Acts, ch 135, §1; 91 Acts, ch 267, §517; 95 Acts, ch 130, §1; 96 Acts, ch 1197, §5, 6; 99 Acts, ch2, §1, 4; 99 Acts, ch 178, §1, 10; 2000 Acts, ch 1186, §2; 2003 Acts, ch 145, §286; 2008 Acts, ch 1181, §93, 94; 2013 Acts, ch 121, §49, 50; 2016 Acts, ch 1036, §3; 2021 Acts, ch 177, §121
Referred to in §257.3, 257.4, 257.12, 257.15, 257.16B, 257.16D, 257.3 4