On-Road Vehicle and Engine Emission Regulations

16 (1) Subject to section 19, Otto-cycle heavy-duty engines of a specific model year shall conform to the exhaust and crankcase emission standards applicable to Otto-cycle heavy-duty engines of that model year set out in section 10, subpart A, of the CFR.

(2) Subject to section 19, diesel heavy-duty engines of a specific model year shall conform to the exhaust and crankcase emission standards applicable to diesel heavy-duty engines of that model year set out in section 11, subpart A, of the CFR.

(3) Subject to section 19, heavy-duty engines of a specific model year used or intended for use in heavy-duty vehicles that have a GVWR of 6,350 kg (14,000 pounds) or less shall be equipped with an on-board diagnostic system that conforms to the standards applicable to engines of that model year set out in section 17, subpart A, of the CFR.