Abstract: A rollover protection device for the passengers of a vehicle having a body and a lateral bulkhead includes a structural unit adapted to be mounted on one side of the vehicle body lateral bulkhead. The structural unit includes at least one extendible rollover bar, and a module beam being connectable in a force transmitting fashion with the lateral bulkhead and the vehicle body. The module beam extends crosswise to the longitudinal direction of the vehicle in an upper region of the lateral bulkhead, and at least one force transmission member contains the at least one rollover bar. The at least one force transmission member supports the module beam at the vehicle body bottom.