A vehicle comprising an engine and an automatic transmission, wherein the automatic transmission comprises a control device, and the control device comprises: a parking lock mechanism (24, 25), provided with a parking rod, configured to lock rotation of a power transmission shaft of the automatic transmission by setting the parking rod at a locked position on one side in an axial direction of the parking rod, when the automatic transmission is in a parking range, and unlock the rotation of the power transmission shaft by setting the parking rod at an unlocked position on the other side in the axial direction, when the automatic transmission is in ranges other than the parking range; a parking drive mechanism configured to set the parking rod at the locked position by biasing the parking rod, and set the parking rod at the unlocked position by supplying hydraulic pressure generated by operating an engine; a hydraulic pressure control valve configured to intercept the supply of the hydraulic pressure to the parking drive mechanism when power is supplied thereto, and supply the hydraulic pressure to the parking drive mechanism when power is not supplied thereto; a regulating mechanism configured to regulate the movement of the parking rod to the unlocked position when the parking rod is at the locked position; a controller; and an ignition switch configured to turn ON/OFF power of the vehicle, characterized in that the controller is configured to control the supply of power to the hydraulic pressure control valve, and configured to maintain, when the parking rod is at the locked position, after the ignition switch is turned OFF, the supply of power to the hydraulic pressure control valve, while an engine speed of the engine is higher than a given value. the automatic transmission comprises a control device, and the control device comprises: a parking lock mechanism (24, 25), provided with a parking rod, configured to lock rotation of a power transmission shaft of the automatic transmission by setting the parking rod at a locked position on one side in an axial direction of the parking rod, when the automatic transmission is in a parking range, and unlock the rotation of the power transmission shaft by setting the parking rod at an unlocked position on the other side in the axial direction, when the automatic transmission is in ranges other than the parking range; a parking drive mechanism configured to set the parking rod at the locked position by biasing the parking rod, and set the parking rod at the unlocked position by supplying hydraulic pressure generated by operating an engine; a hydraulic pressure control valve configured to intercept the supply of the hydraulic pressure to the parking drive mechanism when power is supplied thereto, and supply the hydraulic pressure to the parking drive mechanism when power is not supplied thereto; a regulating mechanism configured to regulate the movement of the parking rod to the unlocked position when the parking rod is at the locked position; a controller; and an ignition switch configured to turn ON/OFF power of the vehicle, characterized in that the controller is configured to control the supply of power to the hydraulic pressure control valve, and configured to maintain, when the parking rod is at the locked position, after the ignition switch is turned OFF, the supply of power to the hydraulic pressure control valve, while an engine speed of the engine is higher than a given value. a parking lock mechanism (24, 25), provided with a parking rod, configured to lock rotation of a power transmission shaft of the automatic transmission by setting the parking rod at a locked position on one side in an axial direction of the parking rod, when the automatic transmission is in a parking range, and unlock the rotation of the power transmission shaft by setting the parking rod at an unlocked position on the other side in the axial direction, when the automatic transmission is in ranges other than the parking range; a parking drive mechanism configured to set the parking rod at the locked position by biasing the parking rod, and set the parking rod at the unlocked position by supplying hydraulic pressure generated by operating an engine; a hydraulic pressure control valve configured to intercept the supply of the hydraulic pressure to the parking drive mechanism when power is supplied thereto, and supply the hydraulic pressure to the parking drive mechanism when power is not supplied thereto; a regulating mechanism configured to regulate the movement of the parking rod to the unlocked position when the parking rod is at the locked position; a controller; and an ignition switch configured to turn ON/OFF power of the vehicle, characterized in that the controller is configured to control the supply of power to the hydraulic pressure control valve, and configured to maintain, when the parking rod is at the locked position, after the ignition switch is turned OFF, the supply of power to the hydraulic pressure control valve, while an engine speed of the engine is higher than a given value.