Volvo Trucks North America Inc says an active safety feature called adaptive cruise control (ACC) is now available on certain Volvo VN highway tractors.
This Doppler radar-based system works in conjunction with the Volvo engine, Volvo engine brake, and an automated transmission to slow the vehicle if it comes within a three-second range of a vehicle in front of it. The controlled deceleration alerts the driver to maintain safe operation of the vehicle.
ACC and the collision warning system (CWS) work together to supplement a driver's own sense of road conditions.
The CWS assists the driver by advising when a vehicle encroaches upon the truck's safety zone. The ACC goes a step further by automatically slowing the vehicle, giving the driver additional time to act.