A rollover protection system for a motor vehicle has a profiled strut (3) extending in the direction of a vertical axis (6) of the vehicle, and a deformation element (4) held at a first end (9) of the profiled strut (3). The first end (9) is formed facing away from a vehicle floor of the motor vehicle, and the deformation element (4) has a first outer surface (10) facing away from the profiled strut (3) to form an impact surface. The deformation element (4) has a breaking element (11) in the form of a cutting roller.

A smart car system that determines when danger from another vehicle is likely, and addresses that danger. An embodiment signals the other car using open air communication. Another embodiment starts the deployment of anti-crash structure, e.g, airbag or an anti crash fencing.

A coupling link (18) for a hinged roll bar (12) has first and second cover plates (24, 26) spaced apart from each other. An axle bearing (32, 50) is connected to the two cover plates (24) for forming a rotary joint (40) with a first link lever (14) that can be mounted on the axle bearing (32, 50). The coupling link (18) has, in the region of the rotary joint (40), a reinforcing element (42) that forms a support of the first link lever (14).

A coupling link (18) for a hinged roll bar (12) has first and second cover plates (24, 26) spaced apart from each other. An axle bearing (32, 50) is connected to the two cover plates (24) for forming a rotary joint (40) with a first link lever (14) that can be mounted on the axle bearing (32, 50). The coupling link (18) has, in the region of the rotary joint (40), a reinforcing element (42) that forms a support of the first link lever (14).

A vehicle includes a body, door, glass dome, and dynamic pillars. The body defines a cabin and has first and second static pillars. The door that accesses the cabin, is secured to the body, and is disposed between the first and second static pillars. The glass dome is secured to the body over the entirety of the cabin. The dynamic pillars are extendable in an upward direction and are secured to the body proximate to an outer perimeter of the glass dome.

A vehicle includes a body, door, glass dome, and dynamic pillars. The body defines a cabin and has first and second static pillars. The door that accesses the cabin, is secured to the body, and is disposed between the first and second static pillars. The glass dome is secured to the body over the entirety of the cabin. The dynamic pillars are extendable in an upward direction and are secured to the body proximate to an outer perimeter of the glass dome.

A rollover protection element (4) having a rollover element (5, 10, 110, 210) of elongate configuration and a bumper element (6, 11, 111, 211) connected at a free end of the rollover element (5, 10, 110, 210). The bumper element (6, 11, 111, 211) extends in a width direction of the rollover element (5, 10, 110, 210). The bumper element (6, 11, 111, 211) has a circumferential-side wall and webs that are arranged within the wall, a lower-side region of the wall of the bumper element (6, 11, 111, 211) is connected to the rollover element (5, 10, 110, 210). The webs are arranged in a curved and/inclined manner such that none of the webs lies perpendicularly on the lower-side region of the wall.