CFR›Title 39›Chapter III›Part 3023 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 3023—RULES FOR RATE OR SERVICE INQUIRIES Subparts A Subpart A—Rate or Service Inquiry Forms and Procedures Sections 3023.10–3023.12 B Subpart B [Reserved] Authority39 U.S.C. 503, 3662.Source74 FR 16746, Apr. 10, 2009, unless otherwise noted. Redesignated at 85 FR 9615, Feb. 19, 2020. Previous 3022 Part 3022—Rules for Complaints Next 3024 Part 3024—Special Rules for Complaints Alleging Violations of 39 U.S.C. 404a