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arbcombo -- Final Rulemaking Packages for On-Road Diesel Vehicles and Off-Road Equipment Regulations

Posted: 10 Nov 2011 15:32:47
In October, the Air Resources Board (ARB) filed with the Office
of Administrative Law (OAL) final rule-making materials for the
following regulations: the In-Use On-Road Diesel Vehicle
Regulation (Truck and Bus Regulation), the Greenhouse Gas
Emission Reduction Regulation (Tractor-Trailer GHG Regulation),
the Off-Road Large Spark Ignition Engine Fleet Requirements (LSI
Fleet Regulation) and the Regulation for In-Use Off-Road Diesel
Fueled Fleets (Off-Road Regulation).   OAL has until December to
approve the regulations and file them with the Secretary of

The rulemaking documents are available for the truck regulations
at: http://www.arb.ca.gov/regact/2010/truckbus10/truckbus10.htm,
and for the off-road regulations at:


The Air Resources Board adopted a number of regulations that
require diesel engine owners to reduce their engine emissions.
These regulations are part of the State’s plan to meet federal
ambient air quality standards and to protect public health. 
Between now and 2023, nearly all trucks and buses that operate in
California and have a manufacturer’s gross vehicle weight rating
greater than 14,000 pounds must upgrade to reduce exhaust
emissions.  Similar requirements will also become effective in
the next several years affecting owners and operators of certain
off-road equipment (including equipment used in construction,
industrial, and airport operations).  To comply with these
requirements, fleet owners can upgrade existing engines by
installing particulate matter (PM) filter retrofits or other
Verified Diesel Emission Control Strategies (VDECS), or by
upgrading to cleaner engines. 

In addition, the California Global Warming Solutions Act of 2006
(AB 32) established requirements to achieve reductions of
greenhouse gas (GHG) emissions. AB 32 requires the Air Resources
Board (the Board or ARB) and other state agencies to adopt
regulations and other requirements that would reduce statewide
GHG emission levels to the equivalent of 1990 levels by 2020. 
The Tractor-Trailer GHG rulemaking is one of 44 early action
measures identified by the Board and requires certain tractor and
trailer combinations to use low-rolling resistance tires and
aerodynamic technology.

For more information regarding these regulations please call
866-6DIESEL (866-634-3735) or go to:

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