CFR›Title 14›Chapter I›Part 1 ContainsSections 1.1–1.3CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 PART 1—DEFINITIONS AND ABBREVIATIONS Sections 1.1 § 1.1 General definitions. 1.2 § 1.2 Abbreviations and symbols. 1.3 § 1.3 Rules of construction. Authority49 U.S.C. 106(f), 40113, 44701. Next 3 Part 3—General Requirements