CFR›Title 50›Chapter I›Part 15›Subpart A ContainsSections 15.1–15.4CorpusDaily eCFRDisplayed edition2026-04-23Last updated2026-04-23 Subpart A—Introduction and General Provisions Sections 15.1 § 15.1 Purpose of regulations. 15.2 § 15.2 Scope of regulations. 15.3 § 15.3 Definitions. 15.4 § 15.4 Information collection requirements. Next B Subpart B—Prohibitions and Requirements