Image source does not exist News Release: 2015-06-19 California Air Resources Board Chairman welcomes draft federal greenhouse gas rules for trucks and trailers

Release #:15-32

ARB PIO: (916) 322-2990

Stanley Young
(916) 322-2990

California Air Resources Board Chairman welcomes draft federal greenhouse gas rules for trucks and trailers

SACRAMENTO - Air Resources Board Chairman Mary D. Nichols today said U.S. EPA and the National Highway Traffic Safety Administration's (NHTSA) draft Phase 2 greenhouse gas regulations are a positive next step for controlling emissions from trucks and other heavy-duty vehicles.

"These proposed heavy-duty standards will help the nation fight climate change while driving new technology and reducing costs for truckers and fleet managers," said Air Resources Board Chairman Nichols. "We support this effort and will be working to ensure the final regulations help California meet our goals for 2030 and beyond."

As proposed, the draft federal rules would begin affecting manufacturers of trailers for combination tractor-trailer rigs with the 2018 model year. Engine and truck manufacturers would be required to deliver products meeting the Phase 2 requirements in 2021. The draft regulations would affect vehicles from heavy-duty pickups to large 18-wheel tractor-trailer trucks regardless of the type of fuel they use.

California harmonized its heavy-duty vehicle program with the federal Phase 1 greenhouse gas standards in 2013.

This will be the first time federal regulations have required large trailers to help achieve reductions in greenhouse gas emissions. California has had a GHG-reduction regulation in place for box-type trailers 53 feet and longer since 2010.

The Air Resources Board will carefully review the draft federal Phase 2 regulations in light of AB 32's mandate to return greenhouse gas emissions to 1990 levels by 2020. Governor Brown recently announced a 2030 climate change target of a further 40 percent reduction, as well as a goal of cutting petroleum use 50% by 2030.

For more details on DOT's and EPA's notice of proposed rulemaking, visit and

ARB's mission is to promote and protect public health, welfare, and ecological resources through effective reduction of air pollutants while recognizing and considering effects on the economy. The ARB oversees all air pollution control efforts in California to attain and maintain health based air quality standards.