On-Road Vehicle and Engine Emission Regulations

14 Subject to sections 19 and 19.1, an Otto-cycle heavy-duty vehicle of a specific model year, other than a medium-duty passenger vehicle, Class 2B vehicle or Class 3 vehicle, shall

• (a) be equipped with a heavy-duty engine that meets the requirements of these Regulations; and

• (b) conform to

  • (i) for the 2017 and earlier model years, the evaporative emission standards applicable to vehicles of the model year in question set out in section 10 of Title 40, chapter I, subchapter C, part 86, subpart A, of the CFR, or

  • (ii) for the 2018 and later model years, the evaporative emission and refueling emission standards applicable to vehicles of the model year in question set out in section 103 of Title 40, chapter I, subchapter U, part 1037, subpart B, of the CFR.