Versions of Iowa Code 321.5 - Duty to obey on LawServer 2023 Iowa Code 321.5 – Duty to obey 2022 Iowa Code 321.5 – Duty to obey 2020 Iowa Code 321.5 – Duty to obey 2018 Iowa Code 321.5 – Duty to obey 2016 Iowa Code 321.5 – Duty to obey 2014 Iowa Code 321.5 – Duty to obey. 2009 Iowa Code 321.5 – Duty to obey