ROPS Module (Roll Over Protection System)
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
ROPS is a mechanical safety system where two roll-over bars deploy automatically if the car rolls over. These are located behind the rear head restraints.