The development from passive safety systems to driver assistance systems is discussed in this paper. One example of a driver assistance system is the so-called autonomous cruise control system. In this paper, the Automatic Distance contRol system (ADR) will be described in detail. Both the benefits for the customer as well as the technical aspects of the system are discussed. Basically, a five beam laser sensor is used to detect objects. Electric throttle control and electric brake control is ensuring that the safety distance between vehicles is kept up to a specific level.