Versions of Iowa Code 321.309 - Towing on LawServer 2023 Iowa Code 321.309 – Towing 2022 Iowa Code 321.309 – Towing 2020 Iowa Code 321.309 – Towing 2018 Iowa Code 321.309 – Towing — convoys. 2016 Iowa Code 321.309 – Towing 2014 Iowa Code 321.309 – Towing – convoys. 2009 Iowa Code 321.309 – Towing — convoys
