Regulations last checked for updates: Nov 15, 2026

Title 49 - Transportation last revised: Nov 12, 2026
authority: Sec. 304(a)(9)(B), Independent Safety Board Act of 1974, Pub. L. 93-633, 88 Stat. 2169 (49 U.S.C. 1903(a)(9)(B))
source: 40 FR 30248, July 17, 1975, unless otherwise noted.