CFR›Title 14›Chapter II›Part 221›Subpart D ContainsSections 221.30–221.31CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart D—Manner of Filing Tariffs Sections 221.30 § 221.30 Passenger fares and charges. 221.31 § 221.31 Rules and regulations governing passenger fares and services. Previous C Subpart C—Specifications of Tariff Publications Next E Subpart E—Contents of Tariff