Title 42 › CHAPTER 134 — ENERGY POLICY › SUBCHAPTER III — AVAILABILITY AND USE OF REPLACEMENT FUELS, ALTERNATIVE FUELS, AND ALTERNATIVE FUELED PRIVATE VEHICLES › § 13257
Require many new light-duty cars in certain fleets to run on alternative fuels on a set schedule, unless the Secretary decides otherwise after public rulemaking. For non-Federal, non-State, and other excluded fleets the target schedule starts with 20% for model years 1999–2001, then 30% (2002), 40% (2003), 50% (2004), 60% (2005), and 70% in model year 2006 and after. If the Secretary finds a mandatory program is needed, an alternate schedule may start in model year 2002 with 20% (2002), 40% (2003), 60% (2004), and 70% (2005 and after). The Secretary may not set higher percentages than these lists, but can set lower percentages or delay the start date. State government fleets have their own required schedule beginning model year 1996 and rising to 75% in model year 2000; a State may submit an approved plan as an alternative. Before imposing requirements, the Secretary must run public rulemakings with advance notices and at least three regional hearings, allow specified comment periods, and make specific findings by January 1, 2000 that fuel supply, fueling stations, enough compliant vehicles, proper vehicle performance, and no unfair economic harm exist. Fleets can get exemptions if alternative vehicles or fuels are not reasonably available or if compliance causes undue financial hardship; private vehicles garaged at a person’s home are exempt. Converting existing vehicles is not required. The rule must include a petition process (decision within 180 days), allow limited inclusion of law enforcement or urban buses by separate rule, and consider energy security, costs, safety, environmental effects, and other impacts.
Full Legal Text
The Public Health and Welfare, Source: USLM XML via OLRC
Legislative History
Reference
Citation
42 U.S.C. § 13257
Title 42, The Public Health and Welfare
Last Updated
Sep 22, 2026
Release point: 119-110