CFR›Title 14›Chapter II›Part 399›14 CFR Part 399 Subpart A Citation14 CFR Part 399 Subpart AContainsSections § 399.1–§ 399.5CorpusDaily eCFRDisplayed edition2026-08-05Last updated2026-08-05 Subpart A—Applicability and Effects of Policy Statements Sections § 399.1 § 399.1 Applicability. § 399.2 § 399.2 Exclusions. § 399.3 § 399.3 Statements in other Department documents. § 399.4 § 399.4 Nature and effect of policy statements. § 399.5 § 399.5 Arrangement of policy statements. Authority49 U.S.C. 41712, 40113(a).SourcePS-21, 29 FR 1446, Jan. 29, 1964, unless otherwise noted.