Thinking about adding underglow to your car? Here is what Ohio law says, and how to run it legally. If you are ready to install, see our RGBIC underglow kit and the step-by-step install guide.

Is Underglow Legal in Ohio? (2026 Guide)

Two rules are nearly universal across the US: no red light shown to the front and no blue underglow (both are reserved for emergency vehicles), and no flashing, rotating, or strobing lights while driving. Beyond that, states differ. Here is how Ohio handles it.

Underglow rules in Ohio

• Colors: Ohio has no specific statewide ban on underglow color, but keep to standard equipment norms (white or amber to the front, red to the rear) and avoid anything that mimics emergency vehicles. A white light must illuminate your rear plate.
• No flashing: Flashing, oscillating, or rotating lights are prohibited except for authorized use, turn signals, and hazards. Underglow should be steady-burning.
• Brightness: The light should not be excessively bright or glaring. Ohio applies general brightness and glare limits rather than an underglow-specific rule.
• Driving vs parked: Generally usable while driving if it is steady and does not imitate emergency lighting.

Underglow while parked or on private property

These laws generally govern vehicles on a public road or highway, so on genuinely private property, a private parking lot, driveway, car show, or off-road, underglow use is usually far less restricted. It is not a blanket "legal when parked" rule, though. A car parked on a public street is usually still treated as being on the highway, so the color limits (no red or blue to the front) and equipment rules still apply. Red or blue lighting can also trigger separate police-impersonation laws based simply on having or using it, whether or not the car is moving. When in doubt, keep to compliant colors and check your local ordinances.

How to stay legal with underglow in Ohio

• Keep the lights steady-burning, never flashing, strobing, or rotating.
• Show no red light to the front, and avoid blue entirely.
• Do not mimic emergency-vehicle lighting or obscure your license plate.
• Confirm the current rule below and check locally before driving with it on.

The law

Ohio Revised Code section 4513.17 (flashing and colored lights) is the most-cited section, with required lamp colors in sections 4513.03 to 4513.05. Underglow permissibility is by interpretation rather than an explicit underglow statute. You can read the referenced law here: Ohio statute.

Ready to install?

Our RGBIC underglow kit lets you dial in any color and keep it steady, and the install guide walks through wiring it to a switched power source. Free shipping on all US orders.

Ohio Underglow FAQ

Is underglow legal in Ohio?
Yes, Ohio has no specific underglow ban and generally allows steady-burning underglow, as long as it does not flash or imitate emergency vehicle lighting.

Can underglow flash in Ohio?
No. Flashing, oscillating, and rotating lights are not allowed on civilian vehicles. Keep underglow steady-burning.

Can I have underglow on while parked in a lot?
On genuinely private property, such as a private lot, driveway, or car show, underglow use is generally far less restricted. On a public street a parked car is usually still treated as being on the highway, so the color rules still apply, avoid red and blue, and check your local ordinances.

Updated July 2026.