Greenhouse Gas Emission Standards

Final Rule – Phase 2, October, 2016
The Environmental Protection Agency (EPA) published its final rule to establish a second set of emissions and fuel economy standards for medium- and heavy-duty vehicles. The standards will also create efficiency requirements for trailers for the first time beginning in the 2018 model year. The emissions requirements for tractors begin in the 2021 model year.
Regulations for Greenhouse Gas Emissions from Commercial Trucks & Buses
EPA’s program overview.

Renewable Fuel Mandates (RFS

Environmental Protection Agency Site –  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.