US lawFederal (United States)RegulationsTitle 23 CFR — HighwaysChapter I — FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 450 — PLANNING ASSISTANCE AND STANDARDSSubpart A — Transportation Planning and Programming Definitions450.10023 C.F.R. § 450.100Purpose.Last amended: 2017Year: 2026Length: 15 wordsOfficial source Cite as 23 C.F.R. § 450.100 (2026)The purpose of this subpart is to provide definitions for terms used in this part.Next23 C.F.R. § 450.102