; or (ii) any motor vehicle that is rated at more than 10,000 pounds gross vehicular weight. (4) Secretary The term Secretary means the Secretary of Transportation. (b) Automatic shutoff systems for motor vehicles (1) Final rule (A) In general Not later than 2 years after the date of enactment of this Act, the Secretary shall issue a final rule amending section 571.114 of title 49, Code of Federal Regulations (relating to Federal Motor Vehicle Safety Standard Number 114), to require manufacturers to install technology in each motor vehicle equipped with a keyless ignition device and an internal combustion engine to automatically shut off the motor vehicle after the motor vehicle has idled for the period designated under subparagraph (B). (B) Period described (i) In general The period referred to in subparagraph (A) is the period designated by the Administrator of the National Highway Traffic Safety Administration as necessary to prevent carbon monoxide poisoning. (ii) Different periods The Administrator of the National Highway Traffic Safety Administration may designate different periods under clause (i) for different types of motor vehicles, depending on the rate at which the motor vehicle emits carbon monoxide, if— (I) the Administrator determines a different period is necessary for a type of motor vehicle for purposes of section 30111 of title 49, United States Code