US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter V — NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 538 — MANUFACTURING INCENTIVES FOR ALTERNATIVE FUEL VEHICLES538.949 C.F.R. § 538.9Dual fuel vehicle incentive.Last amended: 2016Year: 2026Length: 30 wordsOfficial source Cite as 49 C.F.R. § 538.9 (2026)The application of 49 U.S.C. 32905(b) and (d) to qualifying dual fuel vehicles is extended to the 2005, 2006, 2007, and 2008 model years. [69 FR 7703, Feb. 19, 2004]Cross-references to the US Code49:32905Previous49 C.F.R. § 538.8