Monterey County Farm Bureau


AG truck regulations to be modified?

CARB has released proposed ammendments to the regulation that requires diesel truck and bus owners to take steps to reduce engine emissions; these changes will be considered for approval at the CARB meeting on April 24, 2014.

Key proposed changes include:

  • A longer phase-in period for diesel particulate matter, or PM, requirements for trucks that operate exclusively in certain rural areas with cleaner air
  • Additional time and a lower-cost process for owners of small fleets to meet PM compliance requirements, while reopening opportunities for these fleet owners to apply for and receive public incentive funding
  • A compliance mechanism for owners currently unable to qualify for a loan to finance required upgrades
  • Adjusted schedules for low-use vehicles and certain work trucks
  • Recognition of fleet owners who took action to comply by providing additional 'useable life' for retrofit trucks and reducing near-term compliance requirements


Annual mileage provisions for registerd diesel trucks may be adjusted as follows (until 1/1/2017):

  • 1995 model year and older - new annual limit of 15,000 miles
  • 1996 - 2005 model years - new annual limit of 20,000 miles
  • 2006 model year and newer - new annual limit of 25,000 miles


This proposal eliminates the 10,000 per year limit currently in place for compliance.  In 2017 all three mileage categories will collapse inot a 15,000-mile annual limit until 2020.  In 2020, the limit is reduced to 10,000-mile annual limit until eliminated in 2023.  The goal of these changes is to have older model year engines replaced with 2010 model year or newer engines by 2023.

For small fleets of one to three trucks, the deadline to upgrade the engine on the first truck remains at 1/1/2014, but the proposal would extend the compliance schedule for the second engine to 1/1/2016 and the third engine to 1/1/2018.

Farm Bureau remains actively involved with CARB on regulatory compliance and will participate in support at all hearings on this proposal.

NOx Exempt Areas

CARB is proposing to expand the NOx exempt counties. This option requires that you drive only in these designated counties and delays until 1/1/15 the first requirements to install a PM filter.  Here is the link to a fact sheet on the NOx exempt option.

The original NOx exempt counties were:  Alpine, Colusa, Del Norte, Glenn, Humboldt, Lake, Lassen, Mendocino, Modoc, Monterey, Plumas, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz, Shasta, Sierra, Siskiyou, Northern Sonoma, Tehama, Trinity and Yuba.

The counties proposed to be expanded as NOx exempt counties include:  Amador, Butte, Calaveras,  El Dorado, Inyo, Eastern Kern, Mariposa, Mono,  Nevada,  Eastern Riverside,  Northeastern San Bernardino, Eastern Solano, Sutter,  Tuolumne and Yolo.

AG & NE Stickers

Under the California Air Resources Board Truck and Bus Rule, diesel trucks that are identified on the reporting forms as being agricultural vehicles must be identified.

Owners must affix labels or paint an AG identification on their qualified diesel vehicles .

Truck owners must permanently affix or paint an AG identification label on the right and left door of each limited-mileage and specialty agricultural diesel vehicle in their fleet. Two stickers are required per truck.

We also have the NE stickers available for NOX exempt vehicles.  See air quality rules for applicability to your vehicle in the Monterey County region (link).

Under CA Air Resources Board regulations, all AG vehicles must have 2013 mileage reported on-line by January 31, 2014.   See links below.

How to Purchase

Monterey County Farm Bureau members may contact the MCFB office to obtain AG and NE stickers.

1 set of 2 for $5.00 each -- while supplies last

For More Information