US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter V — NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 570 — VEHICLE IN USE INSPECTION STANDARDSSubpart A — Vehicles With GVWR of 10,000 Pounds or Less570.449 C.F.R. § 570.4Definitions.Last amended: 2016Year: 2026Length: 28 wordsOfficial source Cite as 49 C.F.R. § 570.4 (2026)Unless otherwise indicated, all terms used in this part that are defined in 49 CFR part 571, Motor Vehicle Safety Standards, are used as defined in that part.Previous49 C.F.R. § 570.3Next49 C.F.R. § 570.5