CFR›Title 49›Subtitle B›Chapter V›Part 555 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 555—TEMPORARY EXEMPTION FROM MOTOR VEHICLE SAFETY AND BUMPER STANDARDS Subparts A Subpart A—General Sections 555.1–555.10 B Subpart B—Vehicles Built in Two or More Stages and Altered Vehicles Sections 555.11–555.18 Authority49 U.S.C. 30113, 32502, Pub. L. 105-277; delegation of authority at 49 CFR 1.50.Source38 FR 2694, Jan. 29, 1973, unless otherwise noted. Previous 554 Part 554—Standards Enforcement and Defects Investigation Next 556 Part 556—Exemption for Inconsequential Defect or Noncompliance