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The California Air Resources Board (ARB) has issued Advisory MSC
11-39 to notify stakeholders that ARB is extending the
registration and first year compliance deadlines for Option 2 of
the Large Fleet Compliance Plan to a future date that will be
determined through an upcoming regulatory process. This extension
would provide fleets that have not already registered to use a
compliance option under the regulation to participate in Option 2
of the Large Fleet Compliance Plan. 
 
Background
The Tractor-Trailer Greenhouse Gas Regulation (Regulation)
applies to 53-foot or longer dry van or refrigerated van trailers
(box-type trailers) and the tractors that pull them on California
highways.  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. Environmental Protection Agency SmartWay
program, to meet specified fuel efficiency improvements.

The regulation establishes specific compliance deadlines for
trailers based on fleet size and model year.  Specifically, large
fleets (with 21 or more trailers) may either:  
•	Bring all their pre-2011 model year trailers into compliance by
January 1, 2013, or
•	Phase-in compliance over several years, if they registered by
the registration deadline.  Two phase-in options were available:
o	Option 1 allowed a six year phase-in (from 2010 through 2015),
if large fleets registered by July 1, 2010
o	Option 2 allowed a five year phase-in (from 2011 through 2015),
if large fleets registered by July 1, 2011

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