It shall be the duty of all peace officers and of the state patrol to enforce the provisions of sections 321.372 through 321.379 . [C39, § 5032.09; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.380 ] 98 Acts, ch 1074, §24 ; 2005 Acts, ch 35, §31 ; 2020 Acts, ch 1063, §150 Referred to in §321.378