New Jersey Neon Underglow Laws

New Jersey, known for its vibrant culture and bustling urban scenes, is a hub for car enthusiasts looking to add some flair to their vehicles. One popular way to stand out on the Garden State’s roads is by installing neon underglow lighting. However, before you light up your ride, it’s crucial to understand New Jersey’s laws and regulations concerning neon underglow. In this comprehensive article, we’ll delve into New Jersey’s neon underglow laws, explore what’s permitted, what’s restricted, and how you can enjoy your neon underglow lights while staying on the right side of the law.

Is neon underglow legal in New Jersey?

In New Jersey, the law does not impose restrictions on the use of aftermarket vehicle lighting, including neon underglow. However, it does regulate the colors that may be visible when the vehicle is in motion. Therefore, our conclusion is that neon underglow is generally not illegal in New Jersey.

Since there are no specific prohibitions, underbody lights could be considered legal, provided the following conditions are met:

  • All lights visible from the front of the car must be white or amber.
  • All lights visible from the front sides of the car must be amber.
  • All lights visible from the back or near the back of the car must be red.
  • License plate illumination must be white.
  • Flashing lights are not allowed.
  • No other colors of lights are permitted on vehicles.

There are no pertinent laws that expressly restrict or prohibit the installation of neon car underglow, implying that it is not illegal to use it while the vehicle is not on a public road. To ensure compliance with these regulations, it’s essential to confirm that your neon lights are incapable of changing to restricted colors.

New Jersey Neon Underglow lighting laws

Here are key excerpts from the New Jersey Vehicle Code that specify the limitations, restrictions, and permissions related to the installation of aftermarket lights on vehicles.

Section 39:3-50 – Color of lights

39:3-50. All lamps and reflectors, which display a light visible from directly in front of a vehicle as authorized by this subtitle, shall exhibit lights substantially white, yellow or amber in color.

(a)The color of light emitted or reflected by exterior lamps or reflectors on a vehicle shall be as follows, except as otherwise provided in paragraphs (b), (c) and (d) of this section:

White when the lamp is a headlamp, or spot lamp, or illuminates a license plate or a destination sign; or is located on the outside limit of a side car or other attachment on a motor cycle;

Substantially white or amber when the lamp is a side-cowl or fender lamp, running-board or other courtesy lamp, front parking lamp, back-up lamp, auxiliary driving lamp; or a turn signal on or facing the front;

Substantially red or amber when the lamp is a turn signal or a stop lamp on or facing the rear;

Red when any other lamp or any reflector is on the rear or on either side at or near the rear, except as otherwise provided in paragraph (f) of section 39:3-61 for a combination marker lamp;

Amber when any other lamp or reflector is on the front or on either side other than at or near the rear.

(b)Lamps and reflectors on projecting loads shall emit or reflect light with color as provided in section 10 of this act.

(c)No person shall drive or move any vehicle or equipment upon any street or highway equipped with any device or lamp thereon capable of or displaying a light of any other color than permitted by this section, except: an authorized emergency vehicle, an authorized school bus, or a vehicle authorized by a permit issued by the chief administrator.

Section 39:3-52 – Additional lighting equipment

Any motor vehicle may be equipped with not more than two side cowl or fender lamps which shall emit a white or yellow light without glare. Any motor vehicle may be equipped with not more than one running board courtesy lamp on each side thereof which shall emit a white or yellow light without glare. Any motor vehicle may be equipped with a back-up lamp either separately or in combination with another lamp; except that no such back-up lamp shall be continuously lighted when the motor vehicle is in forward motion.

Section 39:3-54 – Warning lights on vehicles

[…] Flashing lights are prohibited on motor vehicles, motorcycles and motor-drawn vehicles except as a means for indicating a right or left turn; provided, however, any vehicle may be equipped, and when required under this article shall be equipped, with lamps for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard […]

New Jersey Neon Underglow Laws: What You Need to Know

Neon underglow lights can be a great way to add a unique touch to your vehicle in New Jersey, but it’s important to be aware of the following regulations:

  1. Legal Colors: New Jersey allows neon underglow lights in a variety of colors, except for red, blue, and flashing lights. Red and blue are typically reserved for emergency vehicles, while flashing lights are associated with law enforcement.
  2. Placement: Neon underglow lights must be installed beneath the vehicle, and they should not extend beyond the wheel wells.
  3. Flashing Lights: Flashing or oscillating neon lights are prohibited in New Jersey. Neon underglow lights should emit a steady, constant glow.
  4. Brightness: Neon underglow lights should be adjusted to ensure they are not overly bright or distracting to other drivers. They should provide a subtle, ambient glow without impairing visibility.

Consequences of Violating Regulations

Disregarding New Jersey’s neon underglow regulations can result in penalties, including fines and potential warnings from law enforcement. To avoid legal trouble, it’s crucial to adhere to these regulations.

According to New Jersey statutes under section 39:3-47, the consequence for breaching the regulations pertaining to vehicle illumination devices is a monetary fine of $50.

Section 39:3-47 – Illuminating devices required; violations, fines.

a.No person shall drive, move, park or be in custody of any vehicle or combination of vehicles on any street or highway during the times when lighted lamps are required unless such vehicle or combination of vehicles displays lighted lamps and illuminating devices as hereinafter in this article required. Failure to use lighted lamps when lighted lamps are required may result in a fine not to exceed $50.00. In no case shall motor vehicle points or automobile insurance eligibility points pursuant to section 26 of P.L.1990, c.8 (C:17:33B-14) be assessed against any person for a violation of this subsection. A person who is fined under this subsection for a violation of this subsection shall not be subject to a surcharge under the New Jersey Merit Rating Plan as provided in section 6 of P.L.1983, c.65 (C:17:29A-35).

Responsible Usage

While neon underglow lights can enhance your vehicle’s appearance, it’s important to use them responsibly:

  1. Be Mindful of the Setting: Use neon underglow lights thoughtfully, especially in residential areas, to avoid causing disturbances to neighbors.
  2. Regular Maintenance: Ensure your neon lights are correctly installed and well-maintained to prevent accidents and malfunctions.
  3. Consider the Environment: Adjust the brightness and usage of your neon lights to avoid distracting or discomforting other road users.

Stay Informed

Laws and regulations can change over time, so it’s advisable to consult up-to-date sources, such as the New Jersey Motor Vehicle Commission or local law enforcement, to ensure compliance with the latest information.


Installing neon underglow lights on your vehicle in New Jersey can be an exciting way to express your style and make your vehicle stand out. By understanding and adhering to the state’s laws and regulations, you can enjoy your neon underglow lights while respecting the law. Stay informed about the latest regulations to ensure compliance with New Jersey’s neon underglow laws and continue to shine brightly on the roads of the Garden State.

Frequently Asked Questions (FAQs) about Underglow Lights in New Jersey:

Are Underglow Lights Legal in New Jersey?

  • Yes, underglow lights are generally legal in New Jersey, but there are specific regulations you must follow.

When Is It Legal to Use Underglow Lights in New Jersey State?

  • It is legal to use underglow lights in New Jersey as long as you comply with the state’s regulations.

When Is It Illegal to Use Underglow Lights In New Jersey?

  • It is illegal to use underglow lights in New Jersey if they emit red, blue, or flashing colors, as these are typically reserved for emergency vehicles and law enforcement.

Is It Illegal to Install Underglow Lights In New Jersey?

  • It is not illegal to install underglow lights in New Jersey, provided they adhere to the state’s regulations.

What New Jersey Vehicle & Traffic Law Restricts Use of Lights On Motorcycles?

  • The same regulations regarding underglow lights that apply to cars generally apply to motorcycles in New Jersey.

Are Multicolored Underglow Lights Illegal in New Jersey?

  • Using multicolored underglow lights is generally legal in New Jersey, with the exception of red, blue, and flashing lights, which are typically reserved for law enforcement and emergency vehicles.

New Jersey Traffic Ticket/Summons for Under Glow Lights on a Motorcycle

  • Violating underglow regulations in New Jersey may result in receiving a traffic ticket or summons.

Are Under Glow Lights Legal While Parked in New Jersey?

  • Underglow lights are generally legal for use on a parked vehicle in New Jersey, provided they comply with state regulations.

Are Motorcycle Wheel Lights Legal in New Jersey?

  • The legality of motorcycle wheel lights in New Jersey is generally subject to the same regulations as underglow lights on other vehicles.

Is the Law for Underglow Lights the Same for Cars and Motorcycles in New Jersey?

  • Yes, the same laws and regulations regarding underglow lights apply to both cars and motorcycles in New Jersey.

New Jersey Underglow law references:

New Jersey Revised Statutes, Title 39: Motor Vehicles and Traffic Regulation, Sections 39:3-46 to 39:4-60.1

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