Automotive Fleet
MenuMENU
SearchSEARCH

CARB Issues Reminder About Upcoming Diesel Filter Deadline

SACRAMENTO, CA -- The California Air Resources Board is reminding owners of heavier diesel trucks that they need to act now in order to comply with California's truck and bus regulation, which has its first diesel filter deadlines in January 2012.

by Staff
October 31, 2011
4 min to read


CARB Issues Reminder About Upcoming Diesel Filter Deadline for Fleets SACRAMENTO, CA - The California Air Resources Board is reminding owners of heavier diesel trucks that they need to act now in order to comply with California's truck and bus regulation, which has its first diesel filter deadlines in January 2012. “Fleet owners need to plan now to equip their trucks with diesel particulate matter filters in order to be ready in January,” said Assistant Chief of Mobile Sources Erik White, noting that the process of ordering and installing equipment can take a few months. “We continue to make tools available to help truckers better understand the regulation, as well as figure out which options make the most sense for their businesses,” White added. “There are also several options available for funding.” The regulation provides owners of heavier trucks and buses (those with a gross vehicle weight rating (GVWR) greater than 26,000 lbs.) with two options to reduce diesel emissions. They can follow a staggered implementation schedule that requires 1996-1999 model engines be retrofit with a diesel particulate matter (PM) filter by Jan. 1, 2012,  or  they can use a flexible phase-in option that requires any 30 percent of vehicles in the fleet to have a PM filter.  The latter option requires fleet owners to report information about all their heavier vehicles to CARB by Jan. 31, 2012.  Fleets that report can also take advantage of credits and special provisions. Owners of small fleets (defined as one to three trucks with a GVWR greater than 14,000 lbs.) can postpone the January 2012 compliance requirement for their heavier trucks until 2014, but must report their fleet information to CARB by Jan. 31, 2012 in order to receive the extension. Lighter diesel trucks with a GVWR of 14,001 to 26,000 pounds have no compliance requirements until 2015. Business owners may find funding opportunities to upgrade their fleets through either the Carl Moyer Program, which offers incentive grants for buying cleaner-than-required engines yielding early or extra emission reductions, or by using Proposition 1B funds, which are available under the Goods Movement Emissions Reduction Program.  Truck owners seeking more information on compliance assistance and funding opportunities can visit CARB’s Truck Stop, http://www.arb.ca.gov/msprog/truckstop/truckstop.htm call the Diesel Hotline at  (866) 634-3735, or review the Truck and Bus Regulation Fact Sheet. http://www.arb.ca.gov/msprog/onrdiesel/documents/FSRegSum.pdf  Approved in 2008 and later amended in 2010 to provide more flexibility for businesses, the Truck and Bus Regulation will significantly reduce emissions from the nearly 1 million heavy-duty diesel trucks that operate in California. 

SACRAMENTO, CA -- The California Air Resources Board is reminding owners of heavier diesel trucks that they need to act now in order to comply with California's truck and bus regulation, which has its first diesel filter deadlines in January 2012.

Ad Loading...

“Fleet owners need to plan now to equip their trucks with diesel particulate matter filters in order to be ready in January,” said Assistant Chief of Mobile Sources Erik White, noting that the process of ordering and installing equipment can take a few months.

“We continue to make tools available to help truckers better understand the regulation, as well as figure out which options make the most sense for their businesses,” White added. “There are also several options available for funding.”

The regulation provides owners of heavier trucks and buses (those with a gross vehicle weight rating (GVWR) greater than 26,000 lbs.) with two options to reduce diesel emissions. They can follow a staggered implementation schedule that requires 1996-1999 model engines be retrofit with a diesel particulate matter (PM) filter by Jan. 1, 2012,  or  they can use a flexible phase-in option that requires any 30 percent of vehicles in the fleet to have a PM filter. The latter option requires fleet owners to report information about all their heavier vehicles to CARB by Jan. 31, 2012.  Fleets that report can also take advantage of credits and special provisions.

Owners of small fleets (defined as one to three trucks with a GVWR greater than 14,000 lbs.) can postpone the January 2012 compliance requirement for their heavier trucks until 2014, but must report their fleet information to CARB by Jan. 31, 2012 in order to receive the extension.

Lighter diesel trucks with a GVWR of 14,001 to 26,000 pounds have no compliance requirements until 2015.

Ad Loading...

Business owners may find funding opportunities to upgrade their fleets through either the Carl Moyer Program, which offers incentive grants for buying cleaner-than-required engines yielding early or extra emission reductions, or by using Proposition 1B funds, which are available under the Goods Movement Emissions Reduction Program. 

Truck owners seeking more information on compliance assistance and funding opportunities can visit CARB’s Truck Stop, call the Diesel Hotline at  (866) 634-3735, or review the Truck and Bus Regulation Fact Sheets

Approved in 2008 and later amended in 2010 to provide more flexibility for businesses, the Truck and Bus Regulation will significantly reduce emissions from the nearly 1 million heavy-duty diesel trucks that operate in California. 

More Green Fleet

a GM Energy Pass charging station
Green Fleetby News/Media ReleaseJuly 29, 2026

ChargePoint Now Available in Energy Pass

ChargePoint and additional planned charging network integrations were added to GM's Energy Pass.

Read More →
Cover of the "Top 50 Green Fleets" report presented by Automotive Fleet and Inspiration Fleet, featuring an aerial nighttime photo of a lit highway interchange with looping ramps.
SponsoredJuly 16, 2026

The Top 50 Green Fleets

The List Is in: The Top 50 Green Fleets

Read More →
Ad Loading...
a Slate EV preview thumnbail
Green Fleetby Chris BrownJuly 14, 2026

First Look: Slate Auto's Electric Fleet Pickup

Could an affordable, modular EV pickup make electrification more practical for fleets?

Read More →
Yellow Slate pickup truck on a platform.
Green Fleetby Martin RomjueJune 26, 2026

Slate Debuts Colorful, Unique EV Models

A recent media and client event, studded with electric vehicles dressed up on platforms, planted a new position for the manufacturer in the wider EV market. Fleets will find cost-saving advantages.

Read More →
Yellow Slate Fastback on a raised platform in a warehouse.
Green Fleetby Martin RomjueJune 25, 2026

Slate Electric SUV, Pickup Switchable Model Aims For Light-Duty Fleets

Everything about this EV is counterintuitive and understated, making it stand out from the crowd.

Read More →
Ad Loading...
Rendering of electric vehicles charging beneath a solar-panel canopy, illustrating Inspiration Mobility Group’s acquisition of Electrada assets to expand commercial fleet electrification services.
Green Fleetby News/Media ReleaseJune 17, 2026

Inspiration Mobility Acquires Key Electrada Assets

Inspiration Mobility Group has acquired select assets of Electrada, adding the fleet electrification provider's team, technology, and charging infrastructure development capabilities to its energy management business.

Read More →
wheel geotab image
SponsoredJune 1, 2026

Turning Connected Vehicle Data Into Decisions That Matter

Fleet leaders have more data than ever, but turning that data into clear, actionable decisions remains a challenge. This white paper shows how leading organizations are using connected vehicle data to improve safety, reduce costs, and optimize fleet performance. Learn how to turn insight into action across your fleet.

Read More →
fleetio coast pay
SponsoredMay 29, 2026

Are You Tracking Your Fleet's True Total Cost of Ownership?

Bobit Business Media surveyed 190 fleet professionals and found that while most fleets are tracking costs, fragmented systems and data gaps are keeping true TCO visibility out of reach. With rising pressure to control spend in an increasingly volatile environment, the gap between what fleets think they know and what the data actually shows is wider than you might expect. See how your peers are managing costs today and where the industry still has room to improve.

Read More →
Ad Loading...
SponsoredMay 15, 2026

Hybrids: Electrification Without the Challenges

For fleet managers, fuel is one of the biggest line items in the budget — and it's one hybrids can shrink without changing how your people work. Download the eBook to see the numbers, understand the technology, and get a step-by-step guide to making the switch.

Read More →