A drive activation control unit in a control apparatus of a motorcycle controls a drive apparatus. An identification signal transmission unit intermittently transmits an identification signal without any operation by an operator who carries a portable terminal. A response signal reception unit receives a response signal transmitted from the portable terminal in response to the identification signal. In response to reception of the response signal, a request signal transmission unit makes a request of the portable terminal for key information. The key-information signal reception unit receives a key information signal including the key information. A drive-activation permission determination unit determines whether or not to permit activation of a drive control unit based on the key information. When the drive-activation permission determination unit permits activation of a drive control unit, the drive activation control unit activates the drive control unit without any operation by an operator who carries the portable terminal.