ARITHMETIC OPERATION DEVICE FOR VEHICLE

The automotive arithmetic device includes: a first route calculation unit (113) that calculates a first candidate route based on a vehicle external environment estimated using deep learning; a static safe area setting unit (122) that sets a static safe area (SA2) based on a result of recognition of a target object outside a vehicle according to a predetermined rule; and a target motion determination unit (130) that determines a target motion of the motor vehicle (1). The target motion determination unit (130) selects the first candidate route as a travel route of the motor vehicle (1) when the first candidate route is entirely within the static safe area (SA2), and does not select the first candidate route as the travel route of the motor vehicle (1) when the first candidate route at least partially deviates from the static safe area (SA2).