Equipment Type

CARB Extends Tractor-trailer Deadline to Aug. 1

The California Air Resources Board announced that trailer fleet owners now have an extra 30 days until August 1, 2011, to register their fleets.

July 05, 2011

The California Air Resources Board announced that trailer fleet owners now have an extra 30 days until August 1, 2011, to register their fleets if they want to take advantage of a flexible phase-in option for a new California
regulation designed to reduce greenhouse gas emissions.

The Tractor-Trailer Greenhouse Gas regulation requires tractors with 53-foot or longer trailers that travel in California to be equipped with U.S. EPA SmartWay verified aerodynamic technologies including low rolling resistance tires, skirts and fairings.

ARB has designed this regulation so that flexible options are available to businesses for planning purposes‰, said ARB Chairman Mary D. Nichols. This way, businesses can add this equipment and start saving money on fuel and reducing greenhouse gas emissions.

Large fleets (with 21 or more trailers) may take advantage of a flexible option which allows fleet compliance to be phased in over five years, from 2011 through 2015. In order to take advantage of this phase-in option, owners must submit a compliance plan to the ARB that includes a list of trailers in the fleet and the scheduled percentage of trailers to be brought
into compliance each year.

Large fleets that do not choose this option must bring all of their pre-2011 model year trailers into compliance by January 1, 2013.

ARB estimates that from 2010 to 2020, the regulation is expected to reduce 33 million metric tons of CO2 emissions nationwide. Tractors and trailers with aerodynamic technologies are more fuel efficient, and are estimated to save about 3 billion gallons of diesel fuel from nationwide operations. As a result, fleet owners can expect to see a return on their investment for skirts, tires and fairings within 2.3 years if they travel 100,000 miles per year.

Fleet owners can register by creating an account and entering their plan for their trailers online at:

Instructions on how to prepare and submit a plan can be found in
the Large Fleet Compliance fact sheet:

Owners without computer access can submit their plan via regular mail to:
Air Resources Board
Attn: ORHDD Section
9480 Telstar Avenue, Suite 4
El Monte, CA 91731

AB 32, signed by California‚s governor in 2006, is California's Global Warming Solutions Act that set in law aggressive greenhouse gas reduction targets that will reduce emissions to 1990 levels by 2020. As part of its Scoping Plan, ARB is using a mix of approaches to meet climate change goals, including the tractor-trailer greenhouse gas rule and other complementary measures.

For more information on the Tractor-Trailer Greenhouse Gas regulation , go to or call 1-866-6-DIESEL.

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