US lawFederal (United States)RegulationsTitle 23 CFR — HighwaysChapter I — FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 490 — NATIONAL PERFORMANCE MANAGEMENT MEASURESSubpart G — National Performance Management Measure for Assessing the Congestion Mitigation and Air Quality Improvement Program—Traffic Congestion490.70123 C.F.R. § 490.701Purpose.Last amended: 2017Year: 2026Length: 40 wordsOfficial source Cite as 23 C.F.R. § 490.701 (2026)The purpose of this subpart is to implement the requirements of 23 U.S.C. 150(c)(5)(A) to establish performance measures for State DOTs and the MPOs to use in assessing CMAQ Traffic Congestion for the purpose of carrying out the CMAQ program.Cross-references to the US Code23:150Next23 C.F.R. § 490.703