US lawFederal (United States)RegulationsTitle 23 CFR — HighwaysChapter I — FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 810 — MASS TRANSIT AND SPECIAL USE HIGHWAY PROJECTSSubpart B — Highway Public Transportation Projects and Special Use Highway Facilities810.10023 C.F.R. § 810.100Purpose.Last amended: 2017Year: 2026Length: 35 wordsOfficial source Cite as 23 C.F.R. § 810.100 (2026)The purpose of the regulations in this subpart is to implement 23 U.S.C. 137, 142(a)(1), 142(b), and 149, which authorize various highway public mass transportation improvements and special use highway facilities as Federal-aid highway projects.Cross-references to the US Code23:137Next23 C.F.R. § 810.102