A system and method for checking the fuel quantity of a vehicle based on vehicle performance includes predicting vehicle performance based from a number of vehicle related input parameters including assumed fuel quantity to provide predicted vehicle performance data. The system amplifies and converts the alarm to a digital encoded radio frequency signal for shutting off power to a kitchen appliance. This makes the operation of installing the box easier and more precise and avoids looseness of the box body during assembly operations carried out on the box. In one embodiment, it is possible to lock the bandwidth, e. A driving section controls the auxiliary steering angle superposition mechanism so as to make the auxiliary steering angle coincide with the target auxiliary steering angle.