US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter V — NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 554 — STANDARDS ENFORCEMENT AND DEFECTS INVESTIGATION554.149 C.F.R. § 554.1Scope.Last amended: 2016Year: 2026Length: 24 wordsOfficial source Cite as 49 C.F.R. § 554.1 (2026)This part establishes procedures for enforcing Federal motor vehicle safety standards and associated regulations, investigating possible safety-related defects, and making non-compliance and defect determinations.Next49 C.F.R. § 554.2