A driver assistance device, configured to: - modify risk distribution-related information regarding a departure risk distribution - such that a risk on an inside of a turn is upwardly corrected and the risk on an outside of a turn is downwardly corrected, both when the vehicle has an oversteer tendency and compared to when the vehicle has no tendency to oversteer, - such that a risk on an outside of a turn is greater than on an inside of a turn as the road curvature (Ks) is greater, the vehicle speed (Vc) is higher, and the friction coefficient (μ) of the road surface is lower, and - based on driving environment-related information regarding a driving environment of a curve approaching a vehicle, - wherein the departure risk distribution is a distribution of a risk of the vehicle departing from a drivable width of a road on which the vehicle travels at a preview point, and - wherein the driving environment-related information is acquired by an external environment recognition unit; - calculate a risk of the vehicle departing from the drivable width at a preview point by referring to the risk distribution-related information; and - modify an actuator operation variable-related information regarding an operation variable of an actuator related to a steering operation of the vehicle for the vehicle to travel on the curve, based on the risk of the vehicle departing from the drivable width to output the actuator operation variable-related information to the actuator. - modify risk distribution-related information regarding a departure risk distribution - such that a risk on an inside of a turn is upwardly corrected and the risk on an outside of a turn is downwardly corrected, both when the vehicle has an oversteer tendency and compared to when the vehicle has no tendency to oversteer, - such that a risk on an outside of a turn is greater than on an inside of a turn as the road curvature (Ks) is greater, the vehicle speed (Vc) is higher, and the friction coefficient (μ) of the road surface is lower, and - based on driving environment-related information regarding a driving environment of a curve approaching a vehicle, - wherein the departure risk distribution is a distribution of a risk of the vehicle departing from a drivable width of a road on which the vehicle travels at a preview point, and - wherein the driving environment-related information is acquired by an external environment recognition unit; - such that a risk on an inside of a turn is upwardly corrected and the risk on an outside of a turn is downwardly corrected, both when the vehicle has an oversteer tendency and compared to when the vehicle has no tendency to oversteer, - such that a risk on an outside of a turn is greater than on an inside of a turn as the road curvature (Ks) is greater, the vehicle speed (Vc) is higher, and the friction coefficient (μ) of the road surface is lower, and - based on driving environment-related information regarding a driving environment of a curve approaching a vehicle, - wherein the departure risk distribution is a distribution of a risk of the vehicle departing from a drivable width of a road on which the vehicle travels at a preview point, and - wherein the driving environment-related information is acquired by an external environment recognition unit; - calculate a risk of the vehicle departing from the drivable width at a preview point by referring to the risk distribution-related information; and - modify an actuator operation variable-related information regarding an operation variable of an actuator related to a steering operation of the vehicle for the vehicle to travel on the curve, based on the risk of the vehicle departing from the drivable width to output the actuator operation variable-related information to the actuator.