ACC & CACC
Adaptive cruise control (ACC) is an improvement of conventional cruise control, maintaining a steady speed set by the user. ACC automatically adjusts the speed of the user's car to match the car's speed in front of them. Adding vehicle-to-vehicle (V2V) communications to adaptive cruise control (ACC) system turns it into a cooperative ACC (CACC) system. The idea behind CACC is to allow cars to “cooperate” by communicating with each other while in the adaptive cruise control mode and to have a vehicle’s cruise control system maintain a proper following distance behind another car by slowing down once it gets too close.