Abstract: A holder for a controller housing of a central airbag unit is arranged on a central tunnel of the vehicle and fixed using fastening bolts by union nuts. A blank paint-free contact area is created around the fastening bolts by the union nuts being mounted on the fastening screws before a painting process. After a painting process, the union nuts are removed from the screws and the controller housing is mounted on the contact areas and secured by the union nuts.

Abstract: A vehicle body has a central tunnel with an open tunnel region which contains profiled closing parts which are disposed spaced apart from one another in the vehicle longitudinal direction and which are arranged and fastened between longitudinally running turned-out portions of the central tunnel. The central tunnel is fastened to a vehicle base.

Abstract: A holder for a controller housing of a central airbag unit is arranged on a central tunnel of the vehicle and fixed using fastening bolts by union nuts. A blank paint-free contact area is created around the fastening bolts by the union nuts being mounted on the fastening screws before a painting process. After a painting process, the union nuts are removed from the screws and the controller housing is mounted on the contact areas and secured by the union nuts.

Abstract: A vehicle body has a central tunnel with an open tunnel region which contains profiled closing parts which are disposed spaced apart from one another in the vehicle longitudinal direction and which are arranged and fastened between longitudinally running turned-out portions of the central tunnel. The central tunnel is fastened to a vehicle base.

Abstract: A transverse bridge for reinforcing a tunnel region of a floor structure of a motor vehicle is fastened to the floor structure and extends between transverse seat struts. The transverse bridge contains two obliquely extending lateral supporting arms and an upper bridge element connecting the two supporting arms. The transverse bridge contains, in the region of the upper bridge element, on its two longitudinal sides, vertically oriented walls which extend at a small lateral distance from parallel wall portions of the tunnel side walls. During a side impact, the vertical wall portions of the tunnel side walls initially coming into direct contact with the vertically oriented walls of the bridge element, and due to this blocking, the greatest portion of the forces occurring from the side impact are transmitted beyond the tunnel region as pure compressive forces onto the side of the floor structure opposing the impact side.

Abstract: A transverse bridge for reinforcing a tunnel region of a floor structure of a motor vehicle is fastened to the floor structure and extends between transverse seat struts. The transverse bridge contains two obliquely extending lateral supporting arms and an upper bridge element connecting the two supporting arms. The transverse bridge contains, in the region of the upper bridge element, on its two longitudinal sides, vertically oriented walls which extend at a small lateral distance from parallel wall portions of the tunnel side walls. During a side impact, the vertical wall portions of the tunnel side walls initially coming into direct contact with the vertically oriented walls of the bridge element, and due to this blocking, the greatest portion of the forces occurring from the side impact are transmitted beyond the tunnel region as pure compressive forces onto the side of the floor structure opposing the impact side.