Regulations last checked for updates: May 18, 2021

Title 23 - Highways last revised: Jan 27, 2021
authority: 23 U.S.C. 103(b)(6), 104(f), 115, 120, 133(b), 134(n), 303(g), 505, and 315; and 49 CFR 1.48(b)
source: 67 FR 47271, July 18, 2002, unless otherwise noted.