Press Release on Federal Phase 2 Rule
Chair Mary D. Nichols' statement on the federal Phase 2 standards, which reduce GHG emissions from medium- and heavy-duty engines and vehicles.
Greenhouse Gas Standards for Medium- and Heavy-Duty Engines and Vehicles
CARB has adopted greenhouse gas (GHG) standards that largely align with the U.S. Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA) GHG standards for new medium- and heavy-duty engines, vehicles, and trailers sold in California. The regulations will reduce GHG emissions from on-road medium- and heavy-duty vehicles.
More about this program
California Phase 2 GHG Amendments
Some minor but needed clarifications and corrections related to the Phase 2 GHG standards
Build upon the Phase 1 GHG standards
First national GHG standards for heavy-duty trucks
Historical and planned workshops
