Safety steering column 

The safety steering column includes features which can be collapsed like a telescope in a collision, preventing the steering from penetrating the interior. Telescopic rods and additional joints ensure significant decoupling of steering wheel movement from the end wall deformation in a crash. This reduces the risk of injury to the driver. In crashes which do not exceed a specific level of severity, the steering wheel and airbag have a fixed position in front of the driver. An in-built shifting mechanism with a damping function reduces the impact on the chest and head insofar as is technically possible.

See also:
Restraint system