Association of Equipment Manufacturers


Cal ARB In-Use Off-Road

The California Air Resources Board (Cal ARB) is part of the California Environmental Protection Agency, an organization that reports directly to the Governor’s Office in the Executive Branch of California State Government.

On July 26, 2007, the Air Resources Board (ARB) adopted the In-Use Off-Road Regulation to reduce diesel particulate matter (PM) and oxides of nitrogen (NOx) emissions from in-use off-road heavy-duty diesel vehicles in California.

The following provides links to regulations, articles and other documents of interest related to Cal ARB:


Cal ARB In-Use Off-Road Diesel Vehicle Regulation
On July 26, 2007, the Air Resources Board (ARB) adopted a regulation to reduce diesel particulate matter (PM) and oxides of nitrogen (NOx) emissions from in-use (existing) off-road heavy-duty diesel vehicles in California. Such vehicles are used in construction, mining and industrial operations.
8/20/2007 | Members Only


Enforcement of Off-Road In-Use Regulations
A number of years ago, California developed a series of regulations concerning the emissions of Off-Road equipment currently In-Use. This regulation included requirements for registration, idling restrictions, mandatory retirement or application of after treatment systems. Due to a variety of conditions, including the economic challenges at the time, a number of the provisions of this regulation were delayed. On September 13th, 2013, the US EPA granted authorization to the California Air Resources Board (ARB) to enforce the In-Use Off-Road Diesel Vehicle Regulations which will be enforced begining beginning January 1, 2014, for large fleets.

Record Retention Requirements for Sellers of California In-Use Off-Road Diesel Vehicles
Effective June 15, 2008, all sales of equipment with 25 horsepower or greater diesel engines into California MUST include notice to the buyer that his equipment may be subject to retrofit or accelerated replacement/repower requirements. These records MUST be retained for three years after the sale. Violators may be subject to severe civil penalties that could be assessed individually, on a daily basis, for every vehicle in violation.
6/15/2008 | Members Only

CARB Guidelines to Seller of Off-Road Vehicle
In anticipation of the In-Use Off-Road Regulation being approved and becoming effective, CARB has issued guidelines for the seller to notify the customer when they sell any vehicle subject to the regulation.
5/1/2008 | Members Only

In-Use Off-Road Final Draft
The California Air Resources Board has posted the 15-Day Notice of public availability of the modified text and availability of additional documents for the proposed In-Use Off-Road Diesel Regulation.
12/12/2007 | Members Only

Overview of the In-Use Off-Road Regulation
Cal ARB has released an overview of their new regulation to reduce emissions from in-use off-road diesel vehicles, which will achieve significant emission reductions and protect public health.
9/20/2007 | Members Only

Fact Sheets

Early Action Can Result in Lower Compliance Costs
The regulation requires fleets to meet certain emission targets and take specific actions by specific dates. Projections made by Cal ARB staff shows it is likely that fleets will have higher annual costs in the first few years after a fleetís initial compliance date and the costs will decrease in later years. Certain actions taken by fleets prior to their initial compliance date will allow them to accrue (bank) credit, which they can use later to avoid being required to retrofit.
10/23/2007 | Members Only

Medium and Large Fleets
This fact sheet discusses provisions for medium and large fleets, a separate fact sheet is available that discusses special provisions for small fleets.
9/20/2007 | Members Only

Small Fleets
This fact sheet discusses provisions for small fleets. It outlines the regulation, which contains special, less stringent provisions for small fleets.
9/20/2007 | Members Only

Owners Requesting OEM Assistance

California Fleet Owners Requesting Engine Information
California equipment owners may need assistance from OEMs to secure information on the engine powering their equipment. To comply with current California Air Resources Board (CARB) regulations, equipment owners and operators need to register their fleet's engines with the CARB. The regulations require a level of detail that many equipment owners may not have easily accessible. In many cases, the owners have been instructed to contact the original equipment manufacturer.
4/24/2008 | Members Only

Press Releases

Cal ARB Adopts Landmark Rule to Reduce Toxic Emissions from Off-Road Equipment
The California Air Resources Board has adopted a pioneering regulation aimed at reducing toxic and cancer-causing diesel emissions from the state's estimated 180,000 "off-road" vehicles used in construction, mining, airport ground support and other industries.
7/26/2007 | Members Only

Safety Store

AEM offers a wide variety of cost-effective materials and resources to help you incorporate safe practices into your workplace. Several safety manuals are now offered in a variety of languages.

Shop Now

Pictorial Database

AEM offers a free database of “industry recognized” pictorial illustrations for voluntary use in the design of equipment safety signs, manuals and other training materials.

View Pictorials

Member Product Locator

Search for AEM member products and/or industry services. Results will provide company information.

Search Now

© 2015 AEM


6737 West Washington Street
Suite 2400
Milwaukee, WI 53214-5647
TEL 414.272.0943
FAX 414.272.1170