In a control apparatus for an automated driving vehicle, a receiving unit receives an external start signal that is a signal for starting automated driving in the automated driving vehicle and is transmitted from outside the automated driving vehicle. A control unit performs processes required for automated driving. A person determining unit determines whether a person is present inside a vehicle cabin of the automated driving vehicle. An operating unit is provided inside the vehicle cabin and receives a single or a plurality of operations for starting automated driving in the automated driving vehicle. In response to the person determining unit determining that a person is present inside the vehicle cabin, the control unit does not start automated driving even when the receiving unit receives the external start signal and starts automated driving only when an operation on the operating unit is performed.