Hey there, fellow car enthusiasts! It’s Edward Askew here, your go-to guy for all things automotive and legal. Today, we’re diving into a topic that’s glowing with interest—quite literally. We’re talking about car underglow lights and whether they’re legal in the UK.

What is Car Underglow?


For those who might not be familiar, car underglow refers to the neon or LED lights installed on the underbody of a car. These lights create a colorful, glowing effect beneath the vehicle, which can be quite the head-turner on the streets. While underglow can add a unique aesthetic to your ride, it’s crucial to understand the legal implications of installing these lights, especially here in the UK.

When it comes to vehicle modifications, the UK has specific regulations to ensure safety and prevent distractions on the road. Here’s the lowdown on the legality of car underglow lights in the UK:

  1. General Use on Public Roads
    • Under UK law, the use of underglow lights on public roads is heavily restricted. This is primarily due to safety concerns and the potential for causing distractions to other drivers.
    • The Road Vehicles Lighting Regulations 1989 plays a significant role in governing the use of lights on vehicles. According to these regulations, any lights that could be mistaken for emergency vehicle lights, or that could dazzle or distract other road users, are prohibited.
  2. Color Restrictions
    • If you do decide to use underglow lights on private property or in a non-public setting, be mindful of the colors you choose. In the UK, certain colors are associated with specific types of vehicles:
      • Blue: Reserved for emergency vehicles.
      • Red: Should only be visible from the rear of the vehicle.
      • White: Typically used for headlights and should not be used on the underside of the car.
  3. Visibility and Brightness
    • The brightness and placement of underglow lights are also subject to regulation. The lights should not be overly bright to avoid causing glare. Additionally, they should not be directly visible to other drivers; instead, they should only illuminate the ground beneath the vehicle.

Exceptions and Special Considerations

  • Car Shows and Private Property
    • While underglow lights are generally restricted on public roads, you can still enjoy them in controlled environments. Car shows, private properties, and off-road events are perfect venues to showcase your vibrant underglow setup without legal worries.
  • Static vs. Flashing Lights
    • Static (non-flashing) underglow lights are less likely to attract legal attention compared to flashing or strobing lights, which can be confused with emergency signals.

Final Thoughts

As much as we love personalizing our rides, it’s crucial to stay within the bounds of the law to ensure everyone’s safety on the road. While the idea of cruising with a neon glow might sound appealing, the restrictions in the UK mean it’s best kept for special events or private settings.

Always check the latest regulations and consider consulting with a legal expert if you’re unsure about any modifications. And remember, the goal is to enjoy your car while keeping the roads safe for everyone.

Drive safe, stay legal, and keep those cars looking sharp!

Edward Askew

Feel free to reach out if you have any more questions about car laws or need legal advice on vehicle modifications. Visit us at for more insights and updates!

Leave a Comment