Designed to support the driver in monotonous traffic situations, the Steering and lane control assistant, including Traffic Jam Assist, make difficult driving situations safer. Between 0 and 130mph (where permitted), the system steers the vehicle automatically and always keeps the vehicle in the middle of the lane.
This cutting-edge steering function uses multiple area surveillance radar systems and a stereo camera to position itself using the lane markers and the vehicle in front, if there is one. In heavy traffic it automatically maintains the desired distance from the vehicle ahead and regulates the car's speed down to a standstill, as well as providing active steering support.
Although the system is capable of driving the vehicle independently, the driver is still legally required to drive with both hands on the wheel. Sensors recognise when the driver is no longer complying with this requirement, and warn acoustically before entering stand-by mode. Stand-by mode is also triggered if the indicator is activated for changing lanes or if the system requirements are no longer met, e.g. the lane is too narrow.