IS MY MOD LEGAL?

Light Bars & LED Lighting in Montana

Vehicle type: Truck

Conditional

Montana requires no cover. Off-road lamps mounted above 42 inches simply may not be illuminated while operating or parked on a highway, and no more than four front lamps over 300 candlepower may be lit at once.

Verified against primary sources · August 2026

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Frequently Asked Questions

Are light bars & led lighting legal in Montana?
Montana requires no cover. Off-road lamps mounted above 42 inches simply may not be illuminated while operating or parked on a highway, and no more than four front lamps over 300 candlepower may be lit at once.
What are the light bars & led lighting limits in Montana?
Montana requires no cover. Off-road lamps mounted above 42 inches simply may not be illuminated while operating or parked on a highway, and no more than four front lamps over 300 candlepower may be lit at once. For specific numeric limits and thresholds, see our full compliance report.
Are there exceptions for light bars & led lighting in Montana?
Yes, there may be exceptions and exemptions. Get the full details including medical exemptions and edge cases in our compliance report.

Street-legal light bars & led lighting picks

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