APPARATUS FOR DRIVING ASSISTANCE AND METHOD FOR DRIVING ASSISTANCE

Disclosed herein is a driving assistance apparatus including a front sensor installed on a vehicle and having a field of sensing outside the vehicle, and a controller configured to process data acquired from a navigation device of the vehicle and data acquired from the front sensor, wherein the controller determines whether the navigation device fails, and determines, based on the data acquired from the front sensor, whether a travel road is a road on which a lane change assistance function is operable when the navigation device fails.