U.S. Code / Title 42 — The Public Health… / Chapter 149—National Energy Policy and ProgramsTitle 42SubchapterSubchapter Vii—Vehicles and FuelsContentsPart A—Existing ProgramsPart B—Hybrid Vehicles, Advanced Vehicles, and Fuel Cell BusesPart C—Clean School BusesPart D—MiscellaneousPart E—Federal and State ProcurementPart F—Diesel Emissions Reduction