Heavy-Duty Low NOx: Updates
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Low NOx
Correo electrónico
| Updates | Date Posted |
|---|---|
| U.S. EPA issued a waiver for the Omnibus regulation on December 17, 2024. | December 17, 2024 |
CARB staff has updated Clean Truck Partnership Commitments - Status and Outcome. | December 6, 2024 |
| CARB staff has posted Enforcement Discretion for Omnibus and Advanced Clean Fleets Regulations. | November 21, 2024 |
| CARB staff has posted CARB's Request to U.S. EPA for Waiver Action Pursuant to Clean Air Act Section 209(e) and Support Document for the Omnibus regulation, as amended 2023. | July 8, |
| CARB staff has posted Response to EMA Request for Enforcement Discretion for Omnibus Regulation. | December 17, 2023 |
| CARB will conduct a public hearing for the Proposed Amendments to the Heavy-Duty Engine and Vehicle Omnibus Regulation on October 20, 2023. Notice of Executive Officer Hearing | September 25, 2023 |
| CARB staff is proposing to amend the Omnibus regulation to provide additional compliance flexibility to engine manufacturers while ensuring the proposed amendments will not reduce the emissions benefits of the program. On August 1, 2023, CARB staff posted the Proposed Amendments to the Heavy-Duty Engine and Vehicle Omnibus Regulation. Deadline to submit public comments is September 18, 2023. | August 25, 2023 |
| CARB staff has posted Response to EMA Request for Enforcement Discretion for Advanced Clean Fleets Regulation. | July 6, 2023 |
| On March 28, 2022, U.S. EPA released its Clean Trucks Plan proposal to reduce oxides of nitrogen emissions from heavy-duty vehicles. In response, on May 13, 2022, CARB staff submitted extensive comments urging U.S. EPA to finalize standards that are aligned with California’s Heavy-Duty Omnibus regulation or at least that are in line with the proposed Option 1 standards. In addition, on June 20, 2022, CARB staff submitted to U.S. EPA a supplemental comment letter to comment on some requests and statements made by other stakeholders and provide CARB’s feedback and clarity on “matters of central relevance to the rulemaking” before the U.S. EPA. | June 30, 2022 |
| On March 28, 2022, U.S. EPA released its Clean Trucks Plan proposal to reduce oxides of nitrogen emissions from heavy-duty vehicles. The deadline to submit comments on the proposed regulation is May 16, 2022. To assist interested parties in understanding U.S. EPA’s proposal and the two options presented within it, CARB staff prepared a fact sheet that summarizes the emission impacts of the proposed options and compares the options to CARB’s Heavy-Duty Low NOx Omnibus program. | May 10, 2022 |
| CARB staff has posted CARB's Request to U.S. EPA for Waiver and Authorization Action Pursuant to Clean Air Act Sections 209 (b) and 209(e) and Support Document for the Omnibus regulation. | January 31, 2022 |
| CARB staff has posted a report titled "California Air Resources Board Staff Report on the Warranty Cost Study for 2022 and Subsequent Model Year Heavy-Duty Diesel Engines" and a memo to the Board. The report summarizes a year-long study by a warranty cost study working group to better understand the differences between CARB staff’s and industry stakeholder's estimates of warranty costs. | January 6, 2022 |
| CARB staff has posted a fact sheet (Español) on the proposed Heavy-Duty Low NOx Omnibus Regulation. | August 10, 2020 |
| The California Air Resources Board (CARB or Board) will conduct a public hearing to consider approving for adoption the proposed Heavy-Duty Low NOx Omnibus Regulation on August 27, 2020. 60-Day Notice for Rulemaking | July 24, 2020 |
| During recent meetings with CARB staff, many engine manufacturers stated to staff that they are in the process of settling on engine development plans to meet the 2024 model year (MY) Phase 2 greenhouse gas (GHG) requirements. They further stated that, in order to accommodate NOx reductions in their 2024 MY engine designs, they need to know as soon as possible what requirements CARB staff is considering to propose for 2024 MY engines. They described their need for sufficient product development time to incorporate NOx requirements together with the Phase 2 GHG requirements. Thus, in response, CARB staff has prepared this white paper that describes staff's current assessment of what it believes is achievable for 2022 through 2026 MY engines and an assessment of additional requirements for 2027 and subsequent MY engines Staff White Paper. | April 18, 2019 |
| On May 8, 2018, staff released the Public Hearing Notice and related material for the proposed amendments to the California emission control system warranty regulations and maintenance provisions for on-road heavy-duty diesel vehicles with gross vehicle weight ratings greater than 14,000 pounds and heavy-duty diesel engines in such vehicles. Follow the HD Warranty 2018 page to access these documents. Interested members of the public may present comments orally or in writing at the hearing and may provide comments before the hearing. The public comment period for this regulatory action begins on May 11, 2018. Written comments not physically submitted at the hearing must be received no later than 5:00 pm on June 25, 2018. Use the Submit Your Comments to the Board page to submit official comments before the Board Hearing. The Board Hearing is scheduled for 9:00 am on Thursday, June 28, 2018, at the Coastal Hearing Room, 1001 I Street, Sacramento, CA 95814. | May 11, 2018 |