IS MY MOD LEGAL?

Underglow in Missouri

Conditional

Underglow is legal in Missouri, including while driving, subject to color and flashing limits: Red, blue, flashing, and rotating lights are reserved for permitted emergency and work vehicles (a Class A misdemeanor otherwise); steady amber, white, and other non-red/blue colors are fine.

Verified against primary sources · August 2026

What the law says

Missouri does not ban underglow — it restricts colors and behavior. Red, blue, flashing, and rotating lights are reserved for permitted emergency and work vehicles (a Class A misdemeanor otherwise); steady amber, white, and other non-red/blue colors are fine.

Specific Limits

Restrictions
Red, blue, flashing, and rotating lights are reserved for permitted emergency and work vehicles (a Class A misdemeanor otherwise); steady amber, white, and other non-red/blue colors are fine.
While driving
allowed

Exceptions & Exemptions

Underglow lights must not display red or blue colors as these are reserved for emergency vehicles. Lights must be steady and non-flashing. Must not impair driver vision or distract other drivers.

Statute

Mo. Rev. Stat. § 307.175

Read the statute →

Frequently Asked Questions

Are underglow legal in Missouri?
Underglow is legal in Missouri, including while driving, subject to color and flashing limits: Red, blue, flashing, and rotating lights are reserved for permitted emergency and work vehicles (a Class A misdemeanor otherwise); steady amber, white, and other non-red/blue colors are fine.
What are the exact underglow limits in Missouri?
Restrictions: Red, blue, flashing, and rotating lights are reserved for permitted emergency and work vehicles (a Class A misdemeanor otherwise); steady amber, white, and other non-red/blue colors are fine.. While driving: allowed. Source: Mo. Rev. Stat. § 307.175.
Are there exceptions for underglow in Missouri?
Underglow lights must not display red or blue colors as these are reserved for emergency vehicles. Lights must be steady and non-flashing. Must not impair driver vision or distract other drivers.

Street-legal underglow picks

Gear that helps you mod without a ticket in Missouri.

As an Amazon Associate, Is My Mod Legal earns from qualifying purchases made through these links, at no extra cost to you. We only recommend gear that helps you stay street-legal.

Check another modification