Regulations last checked for updates: Sep 27, 2021

Title 23 - Highways last revised: Sep 20, 2021
authority: 23 U.S.C. 106(e), 106(g), 106(h), 112(a) and (b), 302, 315; and 49 CFR part 18
source: 79 FR 52975, Sept. 5, 2014, unless otherwise noted.