CFR›Title 40›Chapter I›Part 1074›Subpart A ContainsSections 1074.1–1074.10; Appendix ACorpusDaily eCFRDisplayed edition2026-07-09Last updated2026-07-09 Subpart A—Applicability and General Provisions Contents 1074.1 § 1074.1 Applicability. 1074.5 § 1074.5 Definitions. 1074.10 § 1074.10 Scope of preemption. Appendix A to Subpart A of Part 1074 Appendix A to Subpart A of Part 1074—State Regulation of the Use and Operation of Nonroad Internal Combustion Engines Next B Subpart B—Procedures for Authorization