Colorado Neon Underglow Light Laws

Underglow lights once used to be a big deal in the aftermarket automotive lighting business. However, their popularity has faded over the years, only to make a bit of a comeback in recent years.

These lights are attached to the undercarriage, which lights up the ground beneath the car. Underglow systems typically feature neon tubes or diffused LEDs.

Different states in the country have different rules and regulations regarding their use. While some states explicitly prohibit their use, others place restrictions on it.

You’re probably wondering how their usage is governed in your state. Is underglow even legal in Colorado?

In the state’s code, there are no relevant laws that expressly prohibit the installation of an underglow system. However, there are certain restrictions that must be followed, the details of which are given below.

Colorado Laws for Neon Underglow Light

Tuner car with blue underglow

The state’s laws regarding the use of neon underglow lights are mentioned in the Colorado Revised Statues, Title 42, Article 4. The following sections are dedicated to laying down the specifics for aftermarket lights:

  • 42-4-213
  • 42-4-215
  • 42-4-238

Before you install any underglow lighting, make sure you go through these criteria to ensure you are well within the legal limits.

  • Light type: There are limitations to the number and types of lights you can install on your motor vehicle. Though there is no direct reference to the type of light permitted in the state, there is a mention of non-glaring light.
  • Size: The Colorado codes have no references regarding the size of lights allowed.
  • Permitted colors: The use of green underglow light is explicitly prohibited. If you violate this code, it will result in a class A traffic infraction.
    • Definitely avoid using a blue or red light at the front of your car as these colors are associated with emergency vehicles. Any violation of this can result in a class 1 misdemeanor. Stick to amber or white light at the front.
  • Intensity: The underglow system must not emit an intense beam of light. High-intensity lights are distracting to oncoming traffic and can result in accidents.
Red LED underglow tubes

As per the state’s vehicle codes, there is no law that specifically restricts or forbids you from installing underglow lights on your car. As long as you follow the terms of affixing aftermarket lights, you won’t have a problem with the authorities.

Though the code doesn’t explicitly prohibit oscillating or flashing lights, it’s in your best interest not to use them. These lights come under regulations for emergency vehicles. Their use in everyday vehicles can be confusing or distracting to other drivers.

Laws regarding the usage of underglow systems in Colorado can vary across its cities and counties. Before you affix any additional lights to your vehicle, make sure you are up-to-date with the rules and regulations.

State of Colorado Info

Colorado flag

Colorado, one of the country’s Mountain states, is also known as Boulder State, owing to the presence of the Southern Rockies, the Great Plains, and the Colorado Plateau.

It shares borders with Arizona, Utah, New Mexico, Oklahoma, Kansas, Nebraska, and Wyoming, and is popular for the abundance and variety of natural beauty it holds.

Population: 5,812,069
Capital: Denver
Area: 104,094 mi²
Registered vehicles: 1,807,777
Total lane miles: 185,486 mi
Number of highways: 5

Wikipedia | State website

Underglow light law reference: Colorado Revised Statutes

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