
Yes, you can put Christmas lights on your car in New Jersey, but there are strict regulations to follow. The key rule is that red and blue lights are completely prohibited for civilian vehicles, as they are reserved for emergency and law enforcement. Any lights you install must not flash, strobe, or mimic official emergency vehicles. Furthermore, your license plates, brake lights, and turn signals must remain fully visible and unobstructed at all times. Violating these rules can result in a traffic ticket.
The primary concern is safety. The New Jersey Motor Vehicle Commission (NJMVC) enforces these rules to prevent confusion on the road. A driver seeing red or blue lights in their rearview mirror might mistakenly pull over for a non-existent emergency vehicle, creating a hazardous situation. Even non-flashing lights can be dangerously distracting to other drivers, especially at night.
If you decide to decorate, use -operated or low-voltage LED lights for safety. The most important step is to secure all wiring and lights firmly. Loose cords can get tangled in wheels or snag on passing objects, posing a serious risk. Never run wires through door jambs or windows in a way that could interfere with your ability to operate the vehicle safely.
| Allowed (with caution) | Prohibited / Risky |
|---|---|
| Solid white or amber lights | Red or blue lights of any kind |
| Lights on the car's roof or interior | Lights that flash, strobe, or oscillate |
| Battery-operated LED strings | Lights blocking license plate view |
| Well-secured wires on exterior | Lights impairing brake/turn signals |
| Temporary installation for short trips | Permanent, hardwired installations |
Ultimately, while it's legal if done correctly, the safest choice is to limit lighting displays to stationary objects like your house. The risk of a ticket or causing an accident often outweighs the festive benefit. If you do decorate your car, keep the display minimal, ensure it's secure, and avoid using it for long highway drives.

From my experience, it's a gray area. The cops here will definitely pull you over if you have red or blue lights—that's a surefire ticket. I stick to simple white lights inside the cabin, like on the dashboard, and never any that flash. It’s just not worth the hassle. Keep it subtle, make sure nothing blocks your windows or lights, and you’ll probably be fine for a quick trip around town.

Think of it like this: your car's lights are for safety, not decoration. New Jersey law is very clear that anything interfering with official lights—brake lights, turn signals—is illegal. So, if your Christmas lights make it hard for the driver behind you to see you're stopping, that's a problem. Stick to decorating the roof or grille, well away from functional lights, and always use solid colors, never flashing.

I looked this up last holiday season. The official NJMVC rules state no red or blue lights. I used cool-white strings on my car's roof rack, powered by a small battery pack. The trick is securing everything with strong tape or zip ties so nothing dangles. I only drove during the early evening on well-lit local roads and took them off as soon as I got home. It worked fine, but I was nervous the whole time.

As a parent, my main concern is safety for my family and others on the road. While it seems festive, adding Christmas lights to a car introduces unnecessary risks: distracting other drivers, creating electrical hazards, or obstructing vital signals. New Jersey's regulations exist for a reason. We achieve the same festive spirit by decorating our car with static, non-lighted items like magnetic reindeer or window clings, which are completely safe and .


