NOTICE
For information regarding the
STATEWIDE TRUCK AND BUS REGULATION,
click on the link above or call 1-866-6-DIESEL (1-866-634-3735)
On-Road Heavy-Duty Vehicle Program
This page last reviewed July 2, 2019

Current Standards, Test Procedures and Regulatory Documents | ||||||||||||||||||||||||
Section 1956.8, Title 13, California Code of Regulations contains California's emission standards for on-road heavy-duty engines and vehicles, and the following test procedures, as incorporated by reference. | ||||||||||||||||||||||||
Heavy-Duty Otto-Cycle Engines and Vehicles
Section 95663, Title 17, California Code of Regulations contains California's greenhouse gas exhaust emission standards for on-road heavy-duty vehicles, and the following test procedures, as incorporated by reference.
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SCR Workshop for On Road Medium Duty and Heavy Duty Engines | ||||||||||||||||||||||||
The California Air Resources Board (ARB) staff invites you to participate in a public
workshop regarding medium-heavy and heavy-heavy diesel engine certification requirements
related to engines using SCR control technology for 2011 and later model year on-road
heavy-duty diesel engines and off-road compression ignition engines. The presentation
and other applicable handouts are available for download below.
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Durability Demonstration Workshop for New Diesel Engines | ||||||||||||||||||||||||
The California Air Resources Board (ARB) staff invites you to participate in a public
workshop regarding engine certification requirements related to engine durability
demonstration for 2010 and later model year on-road heavy-duty diesel engines and
off-road compression ignition engines meeting the Tier-4/Tier-4i certification standards.
The presentation and other applicable handouts are available for download below.
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Hearing Notices / Proposed Regulations / Related Programs | ||||||||||||||||||||||||
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Where Can I Get More Information? | ||||||||||||||||||||||||
For more information, please contact ARB's Diesel toll free hotline at (866) 6DIESEL. | ||||||||||||||||||||||||
You will also find additional information by visiting a list of Diesel Informational Links. |