DRIVER ASSISTANCE APPARATUS AND DRIVER ASSISTANCE METHOD

Disclosed herein, a driver assistance apparatus includes a detector installed in a vehicle, the detector having a view in front of a vehicle and configured to obtain detection data; and a controller including a processor configured to process the detection data; wherein the controller is configured to identify operation of a wiper of the vehicle and calculate a slip rate of the vehicle with respect to a road surface while performing an adaptive cruise control (ACC) that maintains a distance with a vehicle in front at a first distance based on the detection data, and control a driving of the vehicle to maintain the distance with the vehicle in front to a second distance greater than the first distance based on the operation of the wiper and the slip rate.