Abstract: The ROPS comprises a highly rigid behind-cab-frame, a mounting-plate of which is bolted to the truck chassis. A roof-canopy is integrated into the frame. The ROPS includes a brace which holds the frame upright, and ensures that the roof-canopy remains in position, protecting the cab, during rollover. The frame is bolted into the chassis using the same bolts that hold the cargo-box to the chassis (or longer bolts), whereby installation is quick and easy. The installed ROPS is held fast to the chassis of the truck with great strength and rigidity, but there is no disruption to the structural integrity of the chassis.