Montana DUI – statute(s)
- MCA 61-8-401.
Montana DUI – standard
- “It is unlawful and punishable . . . for a person who is under the influence of: . . . a dangerous drug to drive or be in actual physical control of a vehicle within this state; [or] . . . any other drug to drive or be in actual physical control of a vehicle within this state.” MCA 61-8-401(1).
Montana DUI – applicable substances
- A dangerous drug or any other drug.
Montana DUI – affirmative defense
- “The fact that any person charged with a violation of subsection (1) is or has been entitled to use alcohol or a drug under the laws of this state does not constitute a defense against any charge of violating subsection (1).” MCA 61-8-401(2). Per se – statute(s) MCA 61-8-411.
Montana Per se – standard
- “It is unlawful and punishable . . . for any person to drive or be in actual physical control of: . . . a noncommercial vehicle upon the ways of this state open to the public while the person’s delta-9- tetrahydrocannabinol level, excluding metabolites, as shown by analysis of the person’s blood, is 5 ng/ml or more.” MCA 61-8-411(1)(a).
Montana Per se – applicable substances
- Delta-9-tetrahydrocannabinol (“THC”).
Montana Per se – affirmative defense
Montana Implied consent – applicable drivers
- A person who operates or is in actual physical control of a vehicle upon ways of Montana open to the public. MCA 61-8-402(1).
Montana Implied consent – tests authorized
- Test or tests of the person’s blood or breath. MCA 61-8-402(1).
Montana Implied consent – basis for test
- Test must be given if LEO has “reasonable grounds to believe” that the person has been driving while under the influence and has been placed under arrest for a violation of § 61-8-401. MCA 61-8-402(2)(a)(i).
- Test must be given if LEO has “probable cause to believe” that the person was driving while under the influence and caused an accident resulting in property damage. MCA 61-8-402(2)(a)(iii)
- Test must be given if LEO has “probable cause to believe” that the person was driving and was involved in an accident resulting in “serious bodily injury.” MCA 61-8-402(2)(a)(iii).
- If a driver refuses testing for a second time, or refuses testing after a prior conviction, LEO may seek search warrant to compel blood testing. MCA 61-8-402(5).
Montana Implied consent – evidence of refusal
- Proof of refusal is admissible in any criminal action or proceeding arising out of acts alleged to have been committed while driving under the influence. A trier of fact may infer from the refusal that the person was under the influence. The inference, however, is rebuttable. MCA 61-8-404(2).
Driver License Suspension
When a driver’s license is suspended, the privilege to drive a motor vehicle upon public highways is withdrawn for a specified period.
Basis for Suspension | Number of Convictions, Refusals or Violations | Period of Suspension |
Driving under the influence (DUI) or operating a motor vehicle with a blood alcohol content (BAC) of 0.08% or greater | first conviction | 6-month suspension |
second or subsequent conviction within 5 years | 1-year suspension | |
Refusal to submit to alcohol testing (implied consent or preliminary alcohol screening test) | first refusal | 6-month suspension |
second or subsequent refusal | 1-year suspension | |
Operation of a vehicle by a person under 21 years of age with a BAC of 0.02% or more | first conviction | 90-day suspension |
second conviction | 6-month suspension | |
third conviction | 1-year suspension | |
Commercial driver operating a commercial motor vehicle with a BAC of 0.04% or more | first violation | 1-year suspension |
first violation, if transporting hazardous materials requiring a placard | 3-year suspension | |
second or subsequent violation | Suspension for life (reinstatement may be reconsidered after 10 years) | |
Non-payment of fines or non-appearance on a notice to appear | n/a | Indefinite suspension until all conditions of court sentence are met |
Failure to pay child support | n/a | Indefinite suspension until child support obligations are met |
Unsatisfied judgment | n/a | 6-year suspension |
Driver medically unable to safely operate a motor vehicle | n/a | Indefinite unless the medical condition changes |
There are other penalties after conviction for alcohol-related driving offenses:
Source: Montana Department of Justice
Implied consent – administrative / civil penalty for refusal
- First refusal driver’s license suspended for six months.
- Second or subsequent refusal within five years driver’s license suspended for one year. MCA 61-8-402(8).
- If driver is arrested and test is refused, driver must pay $300 administrative fee. MCA 61-8-402(6)(a). Implied consent – criminal penalty for refusal None. Conviction – administrative / civil penalty (license suspension, use of IID)
- First conviction driver’s license suspended for six months.
- Second conviction driver’s license suspended for one year.
- Third or subsequent conviction driver’s license suspended for one year. MCA 61-5-208(2)(a).
- Upon a second or subsequent conviction: (1) if the court recommends a probationary license, it must be with the installation of an IID; and (2) the court must require the person to participate in 24/7 drug monitoring. MCA 61-8-733(1).
Conviction – criminal penalties (jail sentence, fines, community service)
- First conviction jail sentence of 24 hours to six months; fine of $600-$1,000.
- Second violation jail sentence of seven days to one year; fine of $1,200-$2,400.
- Third conviction jail sentence of 30 days to one year; fine of $2,500-$5,000.
- Fourth conviction felony; jail sentence of 13 months to two years; fine of $5,000-$10,000.
- Fifth or subsequent conviction felony; jail sentence of 13 months to five years; fine of $5,000-$10,000. MCA 61-8-714.
- The offense of negligent vehicular assault occurs if a person negligently operates a vehicle while under the influence and causes bodily injury to another. MCA 45-5-205.
Child endangerment
- Committing a violation while one or more passengers under the age of 16 are in the vehicle. MCA 61-8-714
DUI Arrest Statistics and Montana Drunk Driving
DUI Arrest Statistics | Data | |
Average number of people arrested annually for drunk driving | 1,500,000 | |
Montana DUI’s | 4,240 | 998,199 |
* Sources: State Justice Department, Federal Highway Administration