View frequent questions on EPA GHG provisions for conversions of light-duty vehicles, medium-duty passenger vehicles, and certain classes of heavy-duty vehicles for clean alternative fuel.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Frequently Asked Questions: EPA Greenhouse Gas Provisions for Clean Alternative Fuel Conversions of Light-Duty Vehicles and Medium-Duty Passenger Vehicles (PDF)(9 pp, 2 MB, August 2012, EPA-420-F-12-056)
- Frequently Asked Questions: EPA Greenhouse Gas Provisions for Clean Alternative Fuel Conversions of Heavy-Duty Vehicles that are Class 2b and 3 (PDF)(12 pp, 630 K, October 2015, EPA-420-F-15-047)