Montana's DUI laws prohibit driving while under the influence of drugs or alcohol. Read more about how DUI is defined in Montana and the penalties you'll face for a first, second, and third conviction.
Montana law prohibits any person from knowingly possessing an open alcoholic beverage container in a vehicle on a highway or public road. This restriction applies to all persons within the car, including the driver and passengers.
Montana's implied consent law requires all drivers who are lawfully stopped for driving under the influence to take a blood, breath, or urine test at the request of an officer
