These lights are called clearance lamps or cab marker lights, and they serve various purposes on American roads. Many heavy-duty pickup trucks come equipped with this feature as part of their standard or optional trim packages. However, it’s not just about aesthetics; these lights have a vital role in safety and compliance with federal regulations.
Federal Regulations and Safety Features
- The Federal Motor Vehicle Safety Standards (FMVSS) mandate that vehicles over 80 inches (2032 mm) in width must have clearance lamps to improve their visibility to other drivers, particularly in low-light conditions.
- Clearance lamps are more often than not added not for their aesthetic appeal but because of federal regulations.
- Large pickup trucks, including dually models, have these lights on the roof as a standard safety feature to improve vehicular visibility.
The main purpose of clearance lamps on large pickups, as mandated by federal authorities, is to improve vehicular visibility. The lights give other vehicles an idea of the truck’s height and width at night or in adverse weather conditions.
Apart from Safety Features
- Clearance lamps can also serve practical and aesthetic roles. Many pickup truck enthusiasts install aftermarket LED clearance lights to enhance their vehicles’ rugged, off-road-ready appearance.
- Some off-road or work-oriented pickup trucks, such as the Ford F-450 Super Duty or Ram Heavy Duty models used by the police, may upgrade to roof-mounted light bars for increased forward illumination in the dark.
- Utility companies and emergency response teams rely on clearance lamps to ensure their vehicles remain visible while workers perform roadside tasks, especially at night.
These lights can also improve the overall visibility of a pickup truck on the road. The amber-colored cab marker lights, which are installed on the front, help indicate the width, while the red clearance lamps, typically placed on the rear, also serve the same function. Both are useful for preventing accidents in poor visibility scenarios, such as fog or heavy rain.
Buying Clearance Lamps
| Shinefit Amber Smoked Top Cab Clearance Lights | $65.99 | Five-pack, compatible with various trucks, fully sealed design |
| Nilight Round Red LED Clearance Lights | $9.95 | Ten-pack, 60-lumen brightness, sustainability certification |
When buying a set of clearance lamps, consider the compatibility, brightness, and features. Online marketplaces like Amazon offer a wide range of options. Make sure to check the product reviews and ratings to ensure you’re getting a reliable and high-quality product.
Installation and Maintenance
Clearance lamps are relatively easy to install, and many products come with detailed instructions. However, it’s essential to follow the manufacturer’s guidelines to ensure proper installation and maintain the lights’ performance.
A brand called Shinefit offers easy-to-install LED lights that are compatible with a variety of trucks. Their pack of five amber smoked top cab clearance lights retails for $65.99 and has a fully sealed design to lock out moisture during rainy days.
Nilight also offers round red LED clearance lights with 60-lumen brightness. A pack of 10 retails for $9.95 and has earned the Amazon’s Choice badge for its competitive pricing and high ratings.
When buying a set, you are getting two-wire leads, with black for ground or negative and red for positive, alongside the round lights. Each light is covered in rubber for waterproofing and can be mounted not only on the roof but also on the side and rear as clearance or marker lights.
There are several online marketplaces where you can buy clearance lamps, including Amazon.
