Unless and until a court of competent jurisdiction issues a final ruling that H.J. Res. 88 (119th Congress) and H.J. Res. 89 (119th Congress) are invalid or that the waivers U.S. EPA granted California on January 6, 2025, 90 Federal Register 642 and 90 Federal Register 643, are in effect, regulated parties may choose to follow either this section 95300 or section 95300.0.1.

However, if a court of competent jurisdiction issues a final ruling that H.J. Res. 88 (119th Congress) and H.J. Res. 89 (119th Congress) are invalid or that the waivers U.S. EPA granted California on January 6, 2025, 90 Federal Register 642 and 90 Federal Register 643, are in effect, the regulated parties are subject to the requirements of this section 95300 to the extent consistent with the court's final ruling. Notice of the court's ruling will be posted on CARB's website, https://arb.ca.gov.

The purpose of this subarticle is to reduce greenhouse gas emissions from heavy-duty (HD) tractors and long box-type semitrailers (trailers) that transport freight on a highway within California by establishing emission standards and other requirements applicable to both new 2011 and subsequent model year HD tractors and trailers and to 2010 and earlier model year HD tractors and trailers. The use of compliant aerodynamic technologies and low-rolling resistance tires will ensure reductions of greenhouse gas emissions from affected HD tractors and trailers by reducing the aerodynamic drag and tire rolling resistance forces acting on such HD tractors and trailers.

Note: Authority cited: Sections 39600, 39601, 38510, 38560 and 38560.5, Health and Safety Code. Reference: Sections 39600, 38560, 38560.5 and 38580, Health and Safety Code.

History

1. New subarticle 1 (sections 95300-95311) and section filed 12-9-2009; operative 1-1-2010 pursuant to Government Code section 11343.4 (Register 2009, No. 50).

2. Amendment of subarticle heading filed 12-12-2011; operative 1-11-2012 (Register 2011, No. 50).

3. Amendment filed 12-5-2014; operative 12-5-2014 pursuant to Government Code section 11343.4(b)(3) (Register 2014, No. 49).

4. Editorial correction of History 3 (Register 2014, No. 50).

5. Amendment filed 2-7-2019; operative 4-1-2019 (Register 2019, No. 6).

6. New first and second paragraphs filed 10-2-2025 as an emergency; operative 10-2-2025 (Register 2025, No. 40). A Certificate of Compliance must be transmitted to OAL by 4-1-2026 or emergency language will be repealed by operation of law on the following day.

7. New first and second paragraphs refiled 3-26-2026 as an emergency; operative 4-1-2026 (Register 2026, No. 13). A Certificate of Compliance must be transmitted to OAL by 6-30-2026 or emergency language will be repealed by operation of law on the following day.