Volkswagen developed Traffic Jam Assist on the basis of Lane Assist and ACC. Traffic Jam Assist is available on models with automatic transmission. The system makes driving in traffic jams or stop and go conditions considerably more convenient. Thanks to the assistance systems installed, the vehicle can drive in a partly automated mode up to 59 km/h. The Volkswagen steers and brakes entirely automatically. As a basis for this system, Lane Assist provides an Active Lane Guidance function. As a second assistance system, ACC is integrated in Traffic Jam Assist for automatic braking and acceleration. The system therefore allows assisted lateral and longitudinal guidance without relieving the driver from his responsibility for steering.