A driver assistance system includes a first sensor installed in a vehicle to have a front view of a vehicle, and configured to obtain front image data; a second sensor installed in the vehicle to have a front detection field of view of the vehicle and selected from a group consisting of a radar sensor and a LiDAR sensor, configured to obtain front detection data; a third sensor installed in the vehicle to have a side detection field of view of the vehicle and selected from a group consisting of the radar sensor and the LiDAR sensor, and configured to obtain side detection data; and a controller including a processor configured to process at least one of the front image data, the front detection data, and the side detection data.