Glider Kit, Engine, and Vehicle Regulations

The federal government requires the U.S. fleet of heavy-duty engines and vehicles—including commercial long-haul tractor-trailers—to meet various requirements, including those for safety, fuel economy, and air pollution emissions. The first federal emissions standards for heavy-duty engines and vehicles were introduced in 1974 and were gradually tightened in a number of steps. On January 18, 2001, the U.S. Environmental Protection Agency (EPA) set current emission standards for criteria air pollutants and their precursors, including nitrogen oxide (NOx) and particulate matter (PM). Further, on October 25, 2016, EPA and the National Highway Traffic Safety Administration (NHTSA) jointly published the second (current) phase of greenhouse gas (GHG) emissions and fuel efficiency standards for medium- and heavy-duty engines and vehicles (Phase 2). The Phase 2 requirements set emission standards for commercial long-haul tractor-trailers, vocational vehicles, and heavy-duty pickup trucks and vans, and they phase in between model year (MY) 2018 and MY 2027. The rule expands on the Phase 1 standards (promulgated on September 15, 2011, for MYs 2014 through 2018) and introduces first-ever controls on trailers (i.e., the part of the vehicle pulled by the tractor) and glider kits and vehicles (i.e., a new chassis combined with a remanufactured engine). This report examines EPA’s and selected other federal agencies’ requirements on glider kits and glider vehicles and outlines the congressional response.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Tables;
  • Pagination: 19p

Subject/Index Terms

Filing Info

  • Accession Number: 01704704
  • Record Type: Publication
  • Report/Paper Numbers: R45286
  • Files: TRIS
  • Created Date: May 17 2019 1:02PM