Underglow 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.
Verified against primary sources · August 2026
What the law says
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. Mounting the lighting is not itself an offense; using it on a public road is. Private property is where it can be run.
Specific Limits
- Allowed
- parked on private property
- While driving
- prohibited
Exceptions & Exemptions
Underglow lighting is generally prohibited while driving. Red and blue colors are specifically prohibited as they are reserved for emergency vehicles. Non-flashing underglow in other colors may be permitted when vehicle is parked.
Frequently Asked Questions
Are underglow legal in Connecticut?
What are the exact underglow limits in Connecticut?
Are there exceptions for underglow in Connecticut?
Street-legal underglow picks
Gear that helps you mod without a ticket in Connecticut.
The glow that's legal in every state — inside the cabin instead of under it.
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