Attention Contractors!

January 31, 2014 is the Reporting Deadline to Report Certain Truck and Bus Regulatory Compliance Options Including Existing Low-Mileage Construction Trucks and Low-Use Exemption.

Act Now!

The California Air Resources Board (CARB) is currently preparing modifications to the Truck and Bus Regulation to be considered by the CARB board in April 2014. Anticipated changes to the regulation include an increase to the low-use vehicle exemption threshold from 1,000 to 5,000 miles per year (and an increase to the power take off (PTO) operational limit to less than 200 hours per year). CARB is also considering allowing additional construction trucks to take advantage of the Low-Mileage Construction Truck extension provision in the Truck and Bus Regulation if certain conditions are met. January 31, 2014 is the deadline to report your trucks to CARB in order to take advantage of these pending changes to the regulation.

January 31, 2014 is the deadline to report certain Truck and Bus regulatory compliance options including good faith efforts that truck owners and operators have taken prior to January 1, 2014. Truck owners and operators have until January 31, 2014 to take advantage of opt-in periods for the Low-Use Exemption, existing Low-Mileage Construction Truck extension, Existing Particulate Matter (PM) phase-in requirements, NOx exempt areas and existing low-mileage agriculture vehicles as described in the CARB November 2013 Regulatory Advisory.

See the summaries describing the Low-Use Vehicle Exemption and Low-Mileage Construction Truck extension here:

More information from the CARB website:

Below is additional information about the January 31, 2014 truck reporting deadline distributed by CARB on January 28, 2104:

The deadline to report certain Truck and Bus regulatory compliance options is January 31, 2014. This includes good faith efforts that truck owners and operators have taken prior to January 1, 2014. Truck owners and operators also have until January 31, 2014, to take advantage of the following extended opt-in periods outlined in the November 2013 Regulatory Advisory:

  • Existing low-mileage agriculture vehicles
  • Existing Low-mileage construction trucks
  • Existing PM phase-in requirements
  • Low-use exemption
  • NOx exempt areas

Truck owners and operators that need to demonstrate to motor carriers, brokers and dispatchers that they are in compliance with the regulation should note that the quickest way to obtain a verification certificate is to report on-line. Reports received through the mail can take several weeks to process before a certificate can be issued.

Motor carriers, brokers and dispatchers

If a fleet owner does report to ARB, they have until January 31 of each compliance year to do so. Therefore, it is not necessary for motor carriers, brokers, and dispatchers to obtain a certificate to verify compliance from January 1 to January 31 of each compliance year. However, the responsible hiring party should obtain a written statement from the vehicle owner that verifies that their fleet is in compliance with the Truck and Bus regulation during the month of January in lieu of a certificate.

This statement may also be used to confirm compliance for fleets that do not report and are using the engine model year schedule.

The responsible hiring party must perform due diligence by confirming that compliance statements are factual in the contract. If you become aware that one or more vehicles in a fleet do not comply, then you cannot continue to use the services of the fleet.

Other information on how to report compliance with the Truck and Bus regulation is at If you have questions, please call our toll free diesel regulation information line at 1-866-6DIESEL (1-866-634-3735) or e-mail


The regulation requires diesel truck and bus owners to take steps to reduce their engine emissions. The regulation is a part of the State's plan to meet federal ambient air quality standards and to protect public health, particularly near roadways and distribution centers where exposure frequently reaches unhealthy levels. Nearly all trucks and buses with a manufacturer's gross vehicle weight rating greater than 14,000 pounds that operate in California are required to be upgraded from 2012 to 2023 to reduce exhaust emissions.

Most heavier trucks and buses (with a gross vehicle weight rating greater than 26,000 pounds) are required to have a particulate matter filter by January 1, 2014. There are certain exceptions to these requirements for owners that have reported to use flexibility options allowed under the regulation. These include, but are not limited to, certain agricultural and limited-use construction trucks, low-use vehicles, and vehicles operated in certain rural areas.

This information is provided by the Construction Industry Air Quality Coalition.

CIAQC is a non-profit 501(c)(6) founded in 1989 by four southern California trade associations--Associated General Contractors of California, Building Industry Association of Southern California, Engineering Contractors Association and the Southern California Contractors Association.

These signatory contractor organizations, through the Southern California Industry Funds, created CIAQC to help their members understand and navigate the ever-increasing web of government environmental regulation under which they operate their businesses and build our communities, our infrastructure and the environmental systems that will enhance California’s future.

Today several organizations and individual construction firms throughout the state are active in CIAQC. Member associations now also include the Associated General Contractors America – San Diego Chapter, Inc., California Construction Trucking Association, United Contractors, and the California Rental Association.

CIAQC assists the construction industry and regulatory agencies in the development of environmental regulatory strategies that will balance the goals of a healthy environment and a healthy local economy with the least adverse impact on the construction industry.

Site design by Chris Kennedy. Content copyright Construction Industry Air Quality Coalition.

Please review our privacy policy and terms of use.

Supported by the Southern California Industry Advancement Funds and other organizations throughout the state.