Driver Assistance Systems at RLE

The development of driver assistance systems is in full swing and drivers are able to experience very
simplified driving situations or sometimes do not even have to do anything at all. The journey to a
fully automated car is not yet finished though. Apart from legal aspects, which have to be resolved by
the Government, specific attention has to be devoted to the detection of the automotivesurroundings
and the evaluation of sensor-data.

While todays ADAS-functions (Advanced Driver Assistance System) usually act as support or
emergency care, in the medium-run they will take over complete driving-situations and we will only
act as fallback level in case of technical difficulties. An example for a close in time feasible project is
the motorway access beginning with start to exit. Considering the complexity of in-town traffic, a
solution for a situation like this, which provides the necessary safety and relaxation by providing a
human-like quality of driving, will take respective time and thus represents a long-term project.

At RLE Mobility we work, apart from the validation of camera- and radar-based Driver-Assistance-
Systems, on the development of new functions and our own control-device, to be able to contribute
to the journey to fully automated driving on the long run.

In a current project, we develop a control-device for highly-automated driving in queues, where only
the first vehicle needs a driver and every action of the following cars is controlled by the controldevice.
For longitudinal control (accelerator and breaks) a radar-sensor is used, while a camera-based
system controls the lateral control, which keeps the vehicle in the middle of the road.

Additionally to the steering based on sensor-information, a data-connection between the vehicles of
the convoy is established. Through this Car-to-Car Communication, the field of vision of the cars gets
enhanced and thus enables situations like coordinated braking processes in front of an obstacle. The
technical realization of Car-to-Car Communication is possible due to Standard IEEE 802. 11p, which
enables direct data-exchange over a distance of up to one kilometer. Furthermore, this Standard
allows data-exchange via Road Side Units (such as, for example, a traffic light), to enhance the
coverage. This is especially useful in situations, when the coverage is limited due to buildings and to
ensure data exchange even if the market penetration of Car-to-Car vehicles is limited.