Passenger Automobile and Light Truck Greenhouse Gas Emission Regulations — 20
per mile; and D is the assumed total mileage of the vehicles in question, namely, (a) 195,264 miles for a fleet of passenger automobiles, or (b) 225,865 miles for a fleet of light trucks. Calculation and recalculation for the 2017 to 2021 model years (3.3) A company may elect to calculate or recalculate its credits or deficits for any of its fleets of the 2017 to 2021 model years by making the election referred to in subsection 18.1(4) and by using the equation set out in subsection (3) but replacing the descriptions of A and C with the following: A is the adjusted fleet average CO 2 equivalent emission standard, expressed in grams per mile, calculated in accordance with section 17 but, for the purposes of the descriptions of B and C in subsection 17(3), in the case of advanced technology vehicles, natural gas vehicles or natural gas dual fuel vehicles, the number of vehicles is multiplied by the number set out in the table to subsection 18.1(4) in respect of that type of vehicle for the model year in question; C is determined by the formula N v + Σ (N cv × M) where N v is the number of passenger automobiles or light trucks in the fleet, excluding advanced technology vehicles, natural gas vehicles and natural gas dual fuel vehicles, N cv is the number of advanced technology vehicles, natural gas vehicles or natural gas dual fuel vehicles in the fleet, as the case may be, and M is the multiplier set out in the table to subsection 18.1(4) in respect of the type of vehicle for the model year in question. 2022 to 2024 model years (3.4) For the 2022 to 2024 model years, if a company makes the election under subsection 18.1(4), the descriptions of A and C in subsection (3) are replaced by the descriptions of A and C in subsection (3.3). Date of credit or deficit (4) Subject to subsection (4.1), a company obtains credits or incurs deficits for a specific fleet on the day on which the company submits the end of model year report for the model year in question. Date of credit or deficit — 2017 to 2021 model years (4.1) A company obtains credits or reduces its deficits for a specific fleet of the 2017 to 2021 model years if the report includes the following information in respect of that fleet: (a) the number of credits or deficits calculated in accordance with subsection (3) and, as applicable, the number of credits or deficits calculated in accordance with subsection (3.3), as well as the difference between the results; and (b) a statement that the company has elected to recalculate credits or deficits in accordance with subsection (3.3) and an indication of the number of additional credits, or the reduction in the number of deficits, obtained as a result of that election as well as the number of vehicles in question. Time limit — credits for 2011 to 2016 model years (5) Credits obtained for a fleet of passenger automobiles or light trucks of the 2011 to 2016 model years may be used in respect of any fleet of passenger automobiles or light trucks of any model year after the model year in respect of which the credits were obtained, until the 2021 model year, after which the credits are no longer valid. Time limit — credits for 2017 and 2018 model years (6) Credits obtained for a fleet of passenger automobiles or light trucks of the 2017 and 2018 model years may be used in respect of any fleet of passenger automobiles or light trucks of a model year that is up to three model years before or up to six model years after the model year in respect of which the credits were obtained, after which the credits are no longer valid. Time limit — credits for 2019 model year and subsequent model years (7) Credits obtained for a fleet of passenger automobiles or light trucks of the 2019 model year and a subsequent model year may be used in respect of any fleet of passenger automobiles or light trucks of a model year that is up to three model years before or up to five model years after the model year in respect of which the credits were obtained, af