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Underglow in Connecticut

Vehicle type: Truck

Conditional

Underglow may not be used on public roads in Connecticut. Front-facing lights may show only white, yellow, or amber and rear lights only red, yellow, amber, or white, and colored or flashing lights require a DMV permit — so colored underglow is effectively illegal to display while driving.

Verified against primary sources · August 2026

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Frequently Asked Questions

Are underglow legal in Connecticut?
Underglow may not be used on public roads in Connecticut. Front-facing lights may show only white, yellow, or amber and rear lights only red, yellow, amber, or white, and colored or flashing lights require a DMV permit — so colored underglow is effectively illegal to display while driving.
What are the underglow limits in Connecticut?
Underglow may not be used on public roads in Connecticut. Front-facing lights may show only white, yellow, or amber and rear lights only red, yellow, amber, or white, and colored or flashing lights require a DMV permit — so colored underglow is effectively illegal to display while driving. For specific numeric limits and thresholds, see our full compliance report.
Are there exceptions for underglow in Connecticut?
Yes, there may be exceptions and exemptions. Get the full details including medical exemptions and edge cases in our compliance report.

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