Versions of Montana Code 61-8-1007. Penalty for driving under influence -- first through third offenses on LawServer 2023 Montana Code 61-8-1007. Penalty for driving under influence — first through third offenses 2022 Montana Code 61-8-1007. Penalty for driving under influence — first through third offenses 2021 Montana Code 61-8-1007. Penalty for driving under influence — first through third offenses