Abstract: Energy is conserved utilizing information collected by a vehicle safety system. Information concerning whether seats other than the driver's seat are occupied and information concerning the size and weight of any occupants present, is transferred to a power load logic via a vehicle information data bus, or by a hard wired communication link. Power is conserved by turning off energy consuming functions which are specific to an unoccupied seat, or by modulating power consuming functions in proportion to the size and weight of the seat occupant.