Is a red underglow legal for drivers in Missouri in 2026? No – Missouri law still treats red-colored auxiliary lighting on a passenger vehicle as an illegal modification, except for specific emergency‑vehicle exemptions. While the statutes have not changed since the 2020 amendment, local law‑enforcement agencies continue to issue citations for red underglow used on personal cars.
Legal Framework
Missouri Revised Statutes § 307.160(1) defines a “motor vehicle lighting device” and expressly prohibits the use of red lights on any vehicle that is not a law‑enforcement, fire, or ambulance unit. The 2022 amendment added “auxiliary lighting” to the list of prohibited devices, covering neon strips, LED bars, and underglow kits. Violations are classified as a misdemeanor, punishable by a fine up to $150 and possible vehicle impoundment.
Enforcement Practices
Police departments across the state, from St. Louis County to Springfield, routinely cite drivers displaying red underglow during traffic stops. In 2025, the Missouri State Highway Patrol reported a 12 percent increase in lighting‑related citations, attributing much of the rise to novelty‑lighting trends among younger drivers. Officers typically issue a “warning citation” that later converts to a fine if the modification is not removed.
Exceptions and Exemptions
Only emergency‑service vehicles, authorized utility trucks, and vehicles participating in sanctioned off‑road events may display red lighting. The Missouri Department of Transportation permits temporary red underglow for vehicles used in film productions, provided a written waiver is obtained in advance. No exemption exists for private passenger cars, even when the lights are switched off while driving.
Recommendations for Drivers
If you own a red underglow kit, the safest course is to remove it before operating the vehicle on public roads. Keep the kit stored in the trunk for use at private events where local ordinances allow decorative lighting. Should you be stopped, cooperating with the officer and promptly uninstalling the lights can reduce penalties.
Frequently Asked Questions
Can I change the color of an existing underglow kit to avoid a citation?
Switching to white, amber, or blue (provided the blue is not a deep “law‑enforcement” shade) complies with § 307.160, but the kit must still be fully concealed from view while the vehicle is in motion.
Are there any municipalities in Missouri that permit red underglow?
No Missouri municipality has enacted a local ordinance that overrides state law. Any local allowance would be pre‑empted by the state statute.
What is the fine for a first‑offense red‑underglow citation?
A first‑offense misdemeanor citation carries a maximum fine of $150, though many jurisdictions impose a standard $75 penalty.
Does the law apply to electric vehicles and hybrids as well?
Yes. The statute references “any motor vehicle,” which includes gasoline, electric, hybrid, and fuel‑cell powered cars.
If I am cited, can I contest the ticket in court?
You may contest the citation, but the statutory language is clear. Successful defenses are limited to proving the lights were not illuminated while driving or that the vehicle qualifies for an exemption.