Yes, Montana law permits leaving a vehicle running unattended under specific conditions, but local ordinances and evolving enforcement practices may impose additional restrictions.
Leaving a car running unattended in Montana is generally legal under state statute, provided the vehicle is locked and the keys are not left in the ignition. However, local jurisdictions such as Bozeman, Missoula, and Billings have enacted ordinances prohibiting the practice in high-risk areas like downtown cores or near schools. Recent 2026 compliance shifts by the Montana Department of Transportation (MDT) emphasize anti-theft measures, with law enforcement increasingly citing unattended vehicles as a public safety hazard. Violations may result in fines up to $100 under local codes, though statewide enforcement remains inconsistent.
Key Regulations for Leaving Your Car Running Unattended in Montana
- State Statute 61-9-403: Permits unattended vehicles if locked and keys are removed, but does not preempt stricter local laws.
- Local Ordinances: Cities like Bozeman (Chapter 10.04) and Missoula (10-16-1) ban the practice in designated zones, with exceptions for remote areas.
- 2026 MDT Compliance Framework: Encourages law enforcement to treat unattended vehicles as potential theft risks, aligning with federal anti-idling initiatives.
Failure to comply with local restrictions may trigger fines or towing, particularly in areas with high vehicle theft rates. Always verify municipal codes before leaving a vehicle unattended.