Heavy-duty Vehicle and Engine Greenhouse Gas Emission Regulations — 41
icles that are medium heavy-duty vehicles and incomplete vocational vehicles that are to become medium heavy-duty vehicles, (C) 7.5 short tons for vocational vehicles that are heavy heavy-duty vehicles and incomplete vocational vehicles that are to become heavy heavy-duty vehicles, (D) 12.5 short tons for Class 7 tractors and incomplete tractors, (E) 19 short tons for Class 8 tractors and incomplete tractors of the 2020 model year or an earlier model year and for Class 8 tractors and incomplete tractors of the 2021 model year or a subsequent model year that have a GCWR of less than 54 431 kg (120,000 pounds), and (F) 43 short tons for Class 8 tractors and incomplete tractors of the 2021 model year or a subsequent model year that have a GCWR of 54 431 kg (120,000 pounds) or more, and E is the useful life of the vehicles of the fleet, expressed in miles, (ii) by using the following formula for engines tested on an engine dynamometer: (A – B) × C × D × E 1 000 000 where (A – B) is the difference between the in-use emission rate of the engine manufactured without the innovative technology and the in-use emission rate of the engine manufactured with the innovative technology, determined in accordance with engine dynamometer A to B testing of pairs of engines differing only with respect to the innovative technology in question and expressed in grams of CO 2 per brake horsepower-hour, C is the transient cycle conversion factor calculated in accordance with the applicable variable “CF” in section 705(b) of Title 40, chapter I, subchapter U, part 1036, subpart H, of the CFR, except that a reference to “production volumes” in that section must be read as a reference to “number of engines of that engine family that a company imports or manufactures in Canada for the purpose of sale in Canada to the first retail purchaser”, D is the number of engines manufactured with the innovative technology in the fleet, E is the useful life of the engines of the fleet, expressed in miles, or (iii) by substituting the result obtained in accordance with paragraph 35 (1)(d) with the result determined in accordance with the following formula: [A – (B × C)] × D × E × F 1 000 000 where A is the CO 2 emission standard that applies to the fleet of heavy-duty engines under section 30 or subsection 31(2), as the case may be, expressed in grams of CO 2 per brake horsepower-hour, B is the CO 2 family certification level for the fleet, subject to subsection 35(3), expressed in grams of CO 2 per brake horsepower-hour, C is the improvement factor calculated in accordance with section 610(b)(1) of Title 40, chapter I, subchapter U, part 1036, subpart G, of the CFR, based on results of A to B testing, chassis A to B testing or in-use A to B testing of pairs of engines using an engine dynamometer or of pairs of vehicles equipped with the engines in question, as the case may be, differing only with respect to the innovative technology in question, D is the transient cycle conversion factor calculated in accordance with the applicable variable “CF” in section 705(b) of Title 40, chapter I, subchapter U, part 1036, subpart H, of the CFR, except that a reference to “production volumes” in that section must be read as a reference to “number of engines of that engine family that a company imports or manufactures in Canada for the purpose of sale in Canada to the first retail purchaser”, E is the number of engines manufactured with the innovative technology in the fleet, and F is the useful life of the engines of the fleet, expressed in miles. Calculation — alternative procedure (2) If the five-cycle credit value referred to in the description of A in the formula set out in paragraph (1)(a) cannot adequately measure the emission reduction attributable to an innovative technology, the company may calculate that five-cycle credit value using the alternative procedure set out in section 1869(d) of Title 40, chapter I, subchapter C, part 86, of the CFR, if (a) in the case of a ve