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Below is a list of the key highway safety laws in Montana. For more information, contact the Montana State Highway Traffic Safety Office.

No state law

Sources: National Conference of State Legislatures (NCSL) and State Highway Safety Office.

Hand-held Ban All Cell Phone Ban Text Messaging Ban Crash
Data
School Bus Drivers Novice Drivers All Drivers School Bus Drivers Novice Drivers
            Yes

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Child Restraint Required
unless indicated, # refers to Yrs.(Lbs.)
Adult Safety Belt Permissible
unless indicated, # refers to Yrs.(Lbs.)
Maximum Fine
1st Offense
<6 (and <60) Not permissible $100

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Per Se Laws for Drugs (Forbidding Prohibited Substances in Driver's Body) DEC/DRE Programs
(Providing Law Enforcement Training)
  Yes

Source: State Highway Safety Office.

Inc. Penalty for High BAC Admin. License Susp. on 1st Offense Limited Driving Privileges During Susp. Ignition Interlocks Vehicle and License Plate Sanctions Alcohol Exclusion Laws Limiting Treatment
*Meeting Federal Requirements
.16     Mandatory for repeat convictions Impoundment, vehicle confiscation Yes   Yes

Sources: Ensuring Solutions to Alcohol Problems, Insurance Institute for Highway Safety (IIHS), Mothers Against Drunk Driving (MADD), National Conference of State Legislatures (NCSL) and State Highway Safety Office.

Learner Stage Intermediate Stage Full Privilege
Min. Age
(Years/ Months)
Min. Age
(Years/ Months)
Min.
Duration
(Months)
Required
Supervised
Driving Hours
(Night Hours)
Min. Age
(Years/ Months)
Nighttime Driving Restriction Passenger
Restriction
(except family, unless noted)
14 / 6 6 50 (10) 15 11 p.m. - 5 a.m. First 6 mos.–no more than 1 <18; second 6 mos.–no more than 3 <18 16

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Motorcyclists Bicyclists
Universal Helmet Law (Year Enacted) Partial Law Universal Helmet Law Repealed
  <18 1977  

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Length of Regular Renewal Cycle (Yrs.) Provisions for Mature Drivers
8 (or 4 by mail) >75: renewal every 4 yrs.

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Type of Law Who is Covered (Yrs.) In What Seat Maximum Fine 1st Offense
Secondary >6 All $20

Sources: Insurance Institute for Highway and State Highway Safety Office.

State Law
Permitted

Sources: Segway LLC and State Highway Safety Office.

Checkpoints Conducted? Frequency Legality
No   Statute permits only safety spotchecks

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Rural Interstates Urban Interstates Other Limited Access Roads
Cars
(mph)
Trucks
(mph)
Cars
(mph)
Trucks
(mph)
Cars
(mph)
Trucks
(mph)
75 65 65 65 day: 70
night: 65
day: 70
night: 65

Sources: Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Violation / State Law Permitted Locations/Criteria Citation Issued To / Liability Image Taken Penalties (Traditional Penalties)
Speed: Prohibited
Red light: Prohibited
Rail: Permitted

Sources: National Conference of State Legislatures (NCSL), Insurance Institute for Highway Safety (IIHS) and State Highway Safety Office.

Violations Affected Enhanced Penalties Workers Must Be Present Signs Must Be Present
All Minimum double original fine Yes Yes

Sources: National Work Zone Safety Information Clearinghouse and State Highway Safety Office.