U.S. Code / Title 42 — The Public Health… / Chapter 149—National Energy Policy and Programs / Subchapter Vii—Vehicles and FuelsTitle 42PartPart D—MiscellaneousContents§ 16101. Railroad efficiency§ 16102. Diesel fueled vehicles§ 16103. Conserve by Bicycling Program§ 16104. Reduction of engine idling§ 16105. Biodiesel engine testing program§ 16106. Ultra-efficient engine technology for aircraft