Alcohol Laws in Montana:
* Blood alcohol content defined as illegal: .08%
* Open container laws: Yes
* Open container laws: Yes
Helmet Laws in Montana:
Helmets are required in this state for the following:
Bicycle
There are no helmet laws for bicycles
Motorcycle
Riders under the age of 18
Seat Belt Laws in Montana:
* Seat belts required for driver and all passengers age 6 and older.
* Children under age 6 and weighing less than 60 lbs. must be properly restrained in a child restraint device.
* Children under age 6 and weighing less than 60 lbs. must be properly restrained in a child restraint device.
Speed Limits in Montana:
Rural Interstates
Cars: 75 mph
Trucks: 65 mph
Cars: 75 mph
Trucks: 65 mph
Urban Interstates
Cars: 65 mph
Other Limited Access Roads
Cars Day: 70 mph
Cars Night: 65 mph
Other Roads
Cars Day: 70 mph
Cars Night: 65 mph
Public Smoking in Montana:
Smoking is prohibited in enclosed public places, which are defined as an indoor area, room, or vehicle that the general public is allowed to enter or that serves as a place of work.
Sources: AAA, American Lung Association
