CFR › Title 23 › Part 450 › §450.30423 CFR §450.304Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkExcept as otherwise provided in subpart A of this part, terms defined in 23 U.S.C. 101(a) and 49 U.S.C. 5302 are used in this subpart as so defined.