A structure typically made of metal tubing or a solid sheet, mounted behind the cab of a pickup truck, serves to protect the occupants. It acts as a barrier against shifting cargo within the truck bed, particularly in the event of sudden stops or collisions. For example, lumber, pipes, or tools loaded in the bed are prevented from impacting the rear window and potentially injuring the driver or passengers.
The protective device offers multiple advantages. Beyond preventing damage to the cab, it can also function as a mounting point for lights, antennas, or other accessories. Furthermore, it can enhance the overall aesthetic of the vehicle, projecting a rugged or professional image. Historically, such structures were primarily functional, but contemporary designs often incorporate style and customization options.