Adaptive Cruise Control

ACC (Adaptive Cruise Control)
Volvo cars can be specified with Volvo's Adaptive Cruise Control (ACC): ACC uses a radar sensor to continuously measure the distance to the vehicles in front and automatically adjusts the car's own speed to ensure this gap does not grow too small. The driver activates the cruise control by setting the desired maximum speed between 30 and 200 km/h and then selecting the minimum time gap to the vehicles in front. ACC adjusts the car's speed to match that of the vehicle in front. There are five pre-set time intervals to choose between.


Read full details here: http://www.volvoclub.org.uk/press/releases/2004/34675.shtml