Versions of Iowa Code 321.449B - Texting or using a mobile telephone while operating a commercial motor vehicle on LawServer 2023 Iowa Code 321.449B – Texting or using a mobile telephone while operating a commercial motor vehicle 2022 Iowa Code 321.449B – Texting or using a mobile telephone while operating a commercial motor vehicle 2020 Iowa Code 321.449B – Texting or using a mobile telephone while operating a commercial motor vehicle
