What Are Marker Lights on a Semi Truck?

Marker lights are important safety features on a semi-truck. These lights are typically mounted on the side of the trailer and provide extra visibility to other drivers in low light conditions.

The lights contain an array of LEDs which can be turned on and off to indicate whether or not the trailer is in motion. This feature makes it easier for other drivers to spot a semi-truck on the road, increasing safety for all involved.

Marker lights are required by law in most states, and must be inspected regularly as part of a truck’s routine maintenance. The lights should be checked for proper operation and brightness before every trip, and any damaged or burnt-out bulbs should be replaced immediately. It’s also important to make sure that the wiring harness is properly connected and secure to ensure reliable operation.

In addition to their obvious safety benefits, marker lights can also add a unique aesthetic touch to a semi-truck’s exterior. Many truckers choose to customize their marker lights with LED strips or colored lenses in order to create an eye-catching look. With the right combination of colors and designs, these customized marker lights can help make a truck stand out from the crowd.

Conclusion:

Marker lights are an essential safety feature on semi-trucks that help other drivers recognize them at night or in low light conditions. They must be regularly inspected for proper operation and any damaged bulbs should be replaced immediately. In addition, many truckers choose to customize their marker lights with LED strips or colored lenses for added style and visibility.

Photo of author

Stephen Dunn