New Adaptive Cruise Control System: €2,000 (including front and rear radar-based collision mitigation)
The radar-aided automatic proximity control system, adaptive cruise control with stop & go, has undergone intensive development. Its two radar sensors are now located in the front end of the A8 in the air inlets.
The system regulates the speed and the proximity to the preceding vehicle in the range of 0 to 250 km/h (155.34 mph). In stop-and-go traffic it decelerates the new A8 to a standstill.
Informed by the new navigation system, the ACC stop & go function always knows where the A8 is located. It retrieves data from up to 27 control units and operates closely together with the other driver assistance systems, such as the rear radar of the Audi side assist. Thanks to this high level of information the system can detect complex scenarios and make anticipatory decisions in support of the driver.
On the highway, if the car ahead puts on its right turn signal and slows down because its driver wants to exit, the ACC stop & go function recognizes this fact thanks to the camera image and because it can read the exit from the route data supplied by the navigation system. A conventional system would now brake analogously to the car ahead; in many cases the A8 continues on almost without change.
New speed limit info: (€500 lane departure warning system)
A totally new assistance system also profits from the camera – the speed limit indicator, to follow in mid-2010. It detects speed limit signs along the side of the road and presents them as graphics in the instrument cluster display.
Night Vision system with pedestrian recognition: (€2,000)
Also debuting in the Audi A8 is the night vision assistant. The heart of this system is a thermal imaging camera sitting behind the four rings at the front of the car. A computer transforms the information from the camera into images and displays them on the display located between the instruments.
The so-called remote infrared technology used by Audi looks ahead by up to 300 meters (984 ft), depending on the driven speed. Because the system reacts to the heat emitted by objects, people and animals are generally displayed conspicuously bright, while the cool road remains dark. The image processing software specifically seeks human contours – yellow markings in the display highlight detected people. If the person’s movements lead the control unit to assume a hazard, the person is marked red and a warning gong sounds.