Illumination integrated into the air filtration housings of a specific heavy-duty truck model serves both an aesthetic and functional purpose. These lights, typically installed on Peterbilt 389 vehicles, enhance visibility and contribute to the truck’s distinctive appearance.
The addition of these lights provides increased safety during nighttime operation by improving the vehicle’s conspicuity to other motorists. Moreover, this feature has become a recognizable element of the Peterbilt 389’s design, reflecting a tradition of customization and personalization within the trucking community. Historically, such enhancements have been a way for drivers to express individuality and pride in their equipment.