Greenhouse Gas Emission Standards
On August 5, 2021, the EPA announced the Clean Trucks Plan to reduce greenhouse gas (GHG) emissions and other harmful air pollutants from heavy-duty trucks through a series of rulemakings over the next three years.

The first rulemaking, to be finalized in 2022, will apply to heavy-duty vehicles starting in model year 2027. That action will set new standards for criteria pollutants for the entire sector as well as targeted updates to the current GHG emissions standards. A second rule would set more stringent GHG emission standards for new heavy-duty vehicles sold as soon as model year 2030 and beyond.

Renewable Fuel Mandates (RFS)

EPA –  RFS program outline

Alternative Fuels
The Environmental Protection Agency’s Alternative Fuels Data Center is an interactive database of State and Federal laws and incentives.