Underglow in New Jersey
New Jersey requires lamps visible from directly in front to be substantially white, yellow, or amber; red visible from the front is prohibited, blue requires a permit reserved to emergency use, and flashing lights are prohibited except turn and hazard signals. Steady white or amber accent lighting is the safe configuration.
Verified against primary sources · September 2026
What the law says
Red light is reserved for emergency vehicles in New Jersey (the earlier data listing red as allowed was wrong), blue is reserved, and flashing is prohibited.
Specific Limits
- Banned
- red (emergency-only); blue; flashing
Frequently Asked Questions
Are underglow legal in New Jersey?
What are the exact underglow limits in New Jersey?
Street-legal underglow picks
Gear that helps you mod without a ticket in New Jersey.
The glow that's legal in every state — inside the cabin instead of under it.
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