The power steering column is responsible for aiding the driver when steering vehicles to considerably reduce the amount of physical effort required to turn the car wheels. In an electric system, a computer module applies torque from the motor. This torque is sent to the steering column, which is linked to the steering wheel. It is the job of the steering column to connect the steering wheel to the steering mechanism and transfer the torque exerted from the driver. All steering shafts are created from metal, but to make it more lightweight and for safety reasons, most adornments and switches are made of plastic. The steering column is created in a collapsible way, which means in the event of a collision it will break instead of driving in to the chest of the driver on impact.
Most steering columns are also responsible for the control of other electrical functions in the car, for example the ignition switch, turning signals and windscreen wipers. The majority of the steering column is located in the driver’s compartment, but does protrude in to the engine compartment too. It is located under the dashboard. Airbags are fitted in to the steering column to prevent injuries.