CFR›Title 40›Chapter I›Part 88 ContainsSections 88.1–88.2 through 88.3CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 88—CLEAN-FUEL VEHICLES Sections 88.1 § 88.1 General applicability. 88.2 through 88.3 §§ 88.2 through 88.3 [Reserved] Authority42 U.S.C. 7410, 7418, 7581, 7582, 7583, 7584, 7586, 7588, 7589, 7601(a).Source86 FR 34372, June 29, 2021, unless otherwise noted. Previous 87 Part 87—Control of Air Pollution from Aircraft and Aircraft Engines Next 89 Part 89—Control of Emissions from New and In-Use Nonroad Compression-Ignition Engines