Montana

Select Law

State Laws
Felony DUI
DUID Zero Tolerance and Per Se Laws
Cannabis Drug-Impaired Driving Laws
DUI Child Endangerment Laws
Enhanced Penalties for High-BAC
DUI Look-back Periods
Open Container - Alcohol
Good Samaritan
Test Refusal
24/7 Programs
Administrative License Suspension/Revocation
Sobriety Checkpoints
Habitual Offender Designation
Drug Evaluation and Classification Program
DUI Courts - Standalone
DUI Courts - Hybrid
Open Container - Cannabis
Cannabis Laws (2023)
DUID: Implied Consent Testing Methods
DUID Affirmative Defense
Anti-Plea Bargaining Statutes
eWarrant Case Study Sites
Preliminary Breath Test (PBT) Laws
Lower BAC legislation
Low BAC
CARS Implementation
Ignition Interlocks
Electronic Warrants (E-warrants) Authorization
Top Detected Drug Category by State (2021)
False Identification - Sanctions
False Identification - Point-of-Sale Policies
No Refusal Programs
Oral Fluid Testing

Administrative License Suspension/Revocation

ALS/ALR law enacted

Test Refusal

Administrative penalties

DUI Child Endangerment Laws

These states have laws or statues that address DUI Child endangerment in which the offender is subject to a harsher penalty as a result of a child passenger being present.

DUI Look-back Periods

Ten years

Enhanced Penalties for High-BAC

0.16

Felony DUI

Fourth offense

Open Container - Alcohol

In compliance with Federal requirements

Sobriety Checkpoints

Alternative to checkpoints

No Refusal Programs

Lacks authorization

Cannabis Laws

Recreational & Medical Cannabis

Ignition Interlocks

Mandatory repeat offender

Open Container - Cannabis

Cannabis-specific open container law

DUI Statute

DUI Alcohol and Other Drugs

Statute with THC listed as Delta 6, 7, 8, 9, 10, 11

DUID: Implied Consent Testing Methods

Blood, Oral Fluids

ALR Laws

Hardship license available for alcohol and other drugs

Social Host Laws

Alcohol