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The California Air Resources Board (ARB) has issued Advisory
Mail-Out MSC# 12-06 to notify stakeholders that the registration
and first year compliance deadlines for the Large Fleet
Compliance Plan have been extended to June 1, 2012.   This
extension will provide fleets that have not already registered to
use a compliance option under the regulation to participate in
the extended phase-in option that started in 2011 (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, Advisory Mail-Out
12-06, 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.