Is It Illegal to Have Lights Under Your Car?: Understanding Car Light Regulations in Under a Minute

Adding underglow lights (the colorful LED or neon lights installed under a vehicle) is a popular way for car enthusiasts to express creativity and enhance their vehicle’s appearance. But whether it’s legal to have lights under your car varies widely depending on where you live. In the United States, underglow laws are set at the state—and sometimes local—level. Generally, these laws are designed to ensure vehicle visibility while avoiding distraction or confusion with law enforcement vehicles.

Most states allow underglow lights as long as they are not blue or red (which are often reserved for police vehicles), do not flash or strobe, and are not visible from the front or rear of the vehicle while driving. Some states outright ban underbody lighting, while others allow it with restrictions on colors, brightness, placement, and usage (e.g., not allowed when driving, only when parked). Because of these variations, it’s essential to check your state’s Department of Motor Vehicles or highway patrol website for specifics.

As a designer, I always consider not just the aesthetics but also the functionality and compliance of any feature I add to a vehicle or living space. Just as you blend creativity and practicality in DIY room decor, modifying your car should balance style with safety and legality. Making design choices that fit within the legal framework ensures lasting satisfaction with your customization.

Tips 1:

Before installing underglow, document your state and local regulations, pay attention to color and brightness limits, and consider wiring the system so it only operates when the vehicle is parked if your region restricts use on the road.

FAQ

Q: Is it legal to drive with underglow lights on?

A: In many states, it is only legal to have underglow lights on when parked, not while driving. Laws vary, so always check local regulations.

Q: What colors are prohibited for underglow lights?

A: Red and blue are commonly prohibited, since they’re associated with emergency vehicles. Some states also restrict white and green.

Q: Can I get pulled over for having underglow lights installed but turned off?

A: Typically, having the lights installed isn’t illegal if they’re off, but law enforcement may pull you over if they suspect they could distract or be used while driving.

Q: Are there specific brightness limits for underglow lights?

A: Several states set limits on brightness (measured in lumens or candela). Exceeding these can result in fines.

Q: Do underglow laws differ for show cars or off-road vehicles?

A: Often, use at car shows or off-road may be allowed even if on-road use is restricted—check the regulations for your vehicle type and intended use.