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arbcombo -- CARB Workshop Materials for Aug. 31: Californiaís Phase 2 GHG Regulation and Possible Changes to Tractor Trailer GHG Regulation

Posted: 30 Aug 2017 16:16:41
The California Air Resources Board (CARB or Board) has posted the
agenda and presentation for the second public workshop on
proposed California Phase 2 Greenhouse Gas (GHG) regulation and
potential amendments to CARBís existing Heavy-Duty Vehicle GHG
Emission Reduction Regulation (Tractor-Trailer GHG regulation).
The agenda and presentation, as well as notice, can be accessed

The workshop will be held at the following date, time, and

Date:		Thursday, August 31, 2017
Time:		9:30 a.m. to 5:00 p.m. (PST)
Place:		Cal/EPA Headquarters Building
                       Coastal Hearing Room
		1001 I Street, Second Floor
                       Sacramento, California 95814

This workshop will also be available via webcast for stakeholders
unable to attend in person and can be accessed at the following
link on the day of the workshop:

For more information about the proposed California Phase 2 GHG
standards, please go to: 

For the potential amendments to tractor-trailer GHG regulation,
please go to:


We welcome and encourage your participation in this workshop.  If
you have any questions regarding the proposed California Phase 2
or potential regulatory changes to Tractor-Trailer GHG
Regulation, please contact Mr. Alex Santos, Staff Air Pollution
Specialist, at (626) 575-6682 or by email at
alex.santos@arb.ca.gov or Ms. Mitzi Magtoto, Air Resources
Engineer, at (916) 323-8975 or by email at


In December 2013, California harmonized with the federal Phase 1
GHG standards for medium- and heavy-duty engines and vehicles
(the Phase 1 rule). Adoption of the federal Phase 1 rule provided
CARB the ability to certify new heavy-duty vehicles and engines
and enforce those requirements in the State. In addition, CARBís
adoption of the Phase 1 standards provided nationwide consistency
for vehicle and engine manufacturers. At the same time, CARB
amended the Tractor-Trailer GHG regulation to align with the
Phase 1 rule by sunsetting the 2014 and subsequent model year
tractor requirements.

Building on the success of the federal Phase 1 rule, in October
2016, the United States Environmental Protection Agency (U.S.
EPA) and the National Highway Traffic Safety Administration
(NHTSA) jointly adopted the federal Phase 2 rule, which is more
stringent than Phase 1. The federal Phase 2 rule is phased-in
over the 2018 through 2027 model years. The structure of the
federal Phase 2 rule is generally similar to Phase 1,
establishing GHG emission standards for tractors, vocational
vehicles, and heavy-duty pickups and vans, and the engines used
in tractors and vocational vehicles. However, the federal Phase 2
rule also establishes standards for certain trailers used in
combination with tractors. The trailer types included in Phase 2
are box-type trailers (dry van and refrigerated van trailers of
all lengths), flat bed trailers, tank trailers, and container
chassis. The trailer requirements include aerodynamic
improvements and tire requirements for box-type trailers, but
only tire requirements for the other trailer types. Although this
marks the first time trailers have been regulated at the federal
level, trailers have been regulated in California since 2010. 

On December 22, 2016, the Truck Trailer Manufacturer Association
filed a lawsuit that challenges and seeks to vacate the trailer
provisions of the federal Phase 2 rule that apply to trailers. On
August 17, 2017, U.S. EPA/NHTSA announced they will reconsider
the trailer provisions of the federal Phase 2 rule. The lawsuit
and reconsideration of the trailer provisions however, does not
affect Californiaís authority to establish standards for trailers
hauled by heavy-duty tractors. 

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