CFR›Title 40›Chapter I›Part 255›Subpart A ContainsSections 255.1–255.2CorpusDaily eCFRDisplayed edition2026-06-08Last updated2026-06-08 Subpart A—General Provisions Sections 255.1 § 255.1 Scope and purpose. 255.2 § 255.2 Definitions. Next B Subpart B—Criteria for Identifying Regions and Agencies