Abstract: The driver assistance device gives a notification to a user of a vehicle. The driver assistance device includes a notification unit that gives the notification according to a possibility of contact between the vehicle and a surrounding object based trajectories of the vehicle and the surrounding object that are predicted based on position potential information indicating a relationship between a plurality of future positions at a second time that is a short amount of time after a first time and probabilities that the vehicle or the surrounding vehicle is located at the future positions at the second time.