Versions of Montana Code 61-8-731. Repealed on LawServer 2023 Montana Code 61-8-731. Repealed 2022 Montana Code 61-8-731. Repealed 2019 Montana Code 61-8-731. Driving under influence of alcohol or drugs — driving with excessive alcohol concentration — under influence of delta-9-tetrahydrocannabinol — aggravated driving under the influence — penalty for fourth or subsequent offense 2018 Montana Code 61-8-731. Driving under influence of alcohol or drugs — driving with excessive alcohol concentration — under influence of delta-9-tetrahydrocannabinol — aggravated driving under the influence — penalty for fourth or subsequent offense 2016 Montana Code 61-8-731. Driving under influence of alcohol or drugs — driving with excessive alcohol concentration — under influence of delta-9-tetrahydrocannabinol — aggravated driving under the influence — penalty for fourth or subsequent offense 2014 Montana Code 61-8-731. Driving under influence of alcohol or drugs — driving with excessive alcohol concentration — penalty for fourth or subsequent offense 2013 Montana Code 61-8-731. Driving under influence of alcohol or drugs — driving with excessive alcohol concentration — penalty for fourth or subsequent offense 2009 Montana Code 61-8-731 – Driving under influence of alcohol or drugs — driving with excessive alcohol concentration — penalty for fourth or subsequent offense