Rollover protection system with auxiliary drive unit

The rollover protection system (1a) comprises a rollover body (2), which is adjusted from a rest position into a rollover position. A primary drive unit (3) is provided, which adjusts the rollover body from the rest position into the rollover position in dangerous situations. The rollover body in the rest position stands in operative connection with a secondary drive unit (9), which is formed for displacement of the rollover body in the direction of the rollover position.