13 Car Modifications That Attract Police Attention

Car enthusiasts often find themselves facing unexpected scrutiny from law enforcement, particularly after making modifications to their vehicles. Certain alterations, while popular, can lead to increased police attention and potential legal trouble. Understanding which modifications attract police scrutiny can save drivers from costly fines and legal issues.

Common Modifications That Raise Red Flags

Many enthusiasts are unaware that some popular modifications may not only be traffic-stop magnets but may also be illegal in various jurisdictions. These modifications can violate vehicle codes or create safety hazards. Here are 13 features that can lead to unwanted interactions with law enforcement.

**Window tinting** is a common practice aimed at reducing heat inside vehicles. However, excessive tint can impair visibility, especially at night, which is a significant safety concern. Each state has its own regulations regarding visible light transmission (VLT). For instance, states like New Hampshire prohibit any tint on the front windscreen, while many others allow around **35% VLT**. Drivers should always check local laws to avoid fines.

Another modification that often leads to police stops is **obscuring license plates**. This can occur unintentionally, such as when a bumper sticker overlaps the plate, or intentionally, using reflective tape to evade cameras. In **2021**, a ruling in New Jersey clarified that police cannot stop vehicles with obscured plates if the markings remain clearly visible. However, it is advisable to avoid any features that might attract attention.

**Underglow lights** are also popular, especially among younger drivers. These colorful lights illuminate the underbody of a vehicle and can produce various effects. However, only a few states, including **California** and **Ohio**, explicitly allow underglow on public roads. Many states regulate these lights strictly, often prohibiting red and blue hues to prevent confusion with emergency vehicles.

**Light bars**, typically installed for off-road use, can also attract police attention when used on public roads. While they can enhance visibility during off-road adventures, their brightness can blind other drivers, leading to safety concerns. Most states prohibit their use on public roads, so drivers should be cautious.

The legality of certain **light colors** on civilian vehicles is another area of concern. Red and blue lights can cause confusion with emergency vehicles, prompting legal restrictions. States also regulate other colors, such as green or amber, when visible from the front of the vehicle.

**Exhaust modifications** can also lead to legal issues. Upgrading exhaust systems for performance is common, but if the output exceeds **80 to 100 decibels**, it may be deemed illegal. Excessively loud exhausts can also be classified as public disturbances, particularly in residential areas or near schools.

Removing the **catalytic converter** is illegal in all states, as it plays a crucial role in reducing harmful emissions. This modification not only increases noise levels significantly but also violates federal laws, risking severe fines and penalties.

**Radar detectors** are devices that help drivers avoid speeding tickets by detecting police speed guns. While they are legal in most states, they are prohibited in **Virginia** and **Washington, D.C.** Some states allow them only in vehicles under certain weight limits.

The **Carolina Squat**, which involves raising the front suspension while lowering the rear, is illegal in both **North and South Carolina** as well as **Virginia**. Authorities cite safety concerns, including visibility issues and an increased risk of rollovers, as reasons for its prohibition.

**Lift kits** can also attract police attention. While they are installed to enhance off-road capability, they can affect braking performance due to changes in vehicle height. This modification is particularly scrutinized in pickup trucks and SUVs, which are often subject to stricter regulations.

Finally, **modified horns** can lead to legal trouble. Many states prohibit horns that do not produce a conventional honk sound. Police may issue citations for horns that are too loud or not loud enough, as they must effectively alert other drivers.

Understanding these modifications and their potential consequences can help vehicle owners make informed choices. While many modifications are legal under specific conditions, they often become problematic when used on public roads. Always check local regulations to ensure compliance and avoid unnecessary fines.