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The California Air Resources Board has issued Regulatory Advisory
Mail-Out MSC# 14-17 to notify interested stakeholders that on
July 30, 2014, the U.S. Environmental Protection Agency (U.S.
EPA) granted ARB a waiver pursuant to section 209(b) of the
federal Clean Air Act for California’s Tractor-Trailer Greenhouse
Gas (GHG) Regulation.   This waiver authorizes ARB to enforce
specific provisions of the Tractor-Trailer GHG Regulation
applicable to 2011 through 2013 model year Class 8 tractors
equipped with integrated sleeper berths and to 2011 and
subsequent model year 53 foot and longer dry-van and
refrigerated-van trailers that are pulled by such tractors on
California highways. 

When the Tractor-Trailer GHG Regulation became effective on
January 1, 2010, the requirements of the regulation were fully
enforceable for 2010 and older model year tractors and trailers;
only the 2011 through 2013 model year tractors and 2011 and newer
53-foot box trailers required a waiver pursuant to section 209(b)
of the federal Clean Air Act.  With the issuance of the waiver
from U.S. EPA, those provisions are now also enforceable.

Background
The Tractor-Trailer GHG Regulation, adopted in December 2008, was
developed to reduce greenhouse gas emissions by improving the
fuel efficiency of heavy-duty tractors that pull 53-foot or
longer box-type trailers.  The regulation requires
tractor-trailers operating in California to use tractors and
box-type trailers that utilize certain aerodynamic equipment and
low rolling resistance tires, as verified by the U.S. EPA
SmartWay program, to meet specified fuel efficiency
improvements.

For further information about the regulation, advisories,
training, outreach efforts, compliance tools, or the full text of
the Tractor-Trailer GHG Regulation, please visit
http://www.arb.ca.gov/msprog/truckstop/truckstop.htm or
http://www.arb.ca.gov/cc/hdghg/hdghg.htm, call 866 6DIESEL (866
634-3735), or email us at 8666diesel@arb.ca.gov.



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