CFR›Title 49›Subtitle B›Chapter X›Part 1121 ContainsSections 1121.1–1121.4CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 1121—RAIL EXEMPTION PROCEDURES Sections 1121.1 § 1121.1 Scope. 1121.2 § 1121.2 Discovery. 1121.3 § 1121.3 Content. 1121.4 § 1121.4 Procedures. Authority49 U.S.C. 10502 and 10704.Source61 FR 52714, Oct. 8, 1996, unless otherwise noted. Previous 1120 Part 1120—Use of 1977-1978 Study of Motor Carrier Platform Handling Factors Next 1122 Part 1122—Board-Initiated Investigations