Underglow in Wyoming
Wyoming has no underglow-specific statute. The general lighting rules govern: no red or blue visible from directly in front, rear devices show red, flashing is reserved for authorized vehicle classes, and bright lamps must be aimed down.
Verified against primary sources · September 2026
What the law says
Wyoming has no underglow-specific statute; flashing lights are restricted to emergency use (§ 31-5-925 area) and red/blue emergency colors should be avoided. The earlier claim here that flashing was allowed was wrong.
Specific Limits
- Aiming
- non-headlamp devices over 300 candlepower must not strike the roadway beyond 75 ft
- Colors
- no red or blue visible from directly in front on non-emergency vehicles; rear-mounted devices must show red
- Flashing
- prohibited except for statutorily authorized vehicles (emergency, school bus, construction, wreckers, utility, and similar)
Frequently Asked Questions
Are underglow legal in Wyoming?
What are the exact underglow limits in Wyoming?
Street-legal underglow picks
Gear that helps you mod without a ticket in Wyoming.
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