WTO notification · TBT
United StatesUpdated: check whether it is now adopted or in force
Official title
Advanced Clean Trucks Pooling Amendments
The United States issued an addendum on 19 May 2026 to the earlier TBT notification G/TBT/N/USA/2218. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 25 June 2025. The comment period closed on 14 July 2025.
Expodite puts notifications like this one in your Updates centre, matched to the HS codes of your products and the markets you export to. Opens the requirements check for the United States in your Expodite account.
Source: WTO ePing (opens in a new tab). Summaries by Expodite, which is independent of the WTO.
Published here:
Updated here:
Truck emissions; Environmental protection; Transport exhaust emissions; Road vehicle systems
The comment period closed on 14 July 2025. You can still raise concerns about the measure with your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/USA/2218/Add.1; it can take them up with the United States.
Find your country's enquiry point on WTO ePing (opens in a new tab)Latest notice (G/TBT/N/USA/2218/Add.1, 19 May 2026)
CARB Withdrawal of Advanced Clean Trucks Pooling Amendments
By notice dated 13 May 2025, and published in the 30 May 2025, California Regulatory Notice Register, Register 2025, Number 22–Z (notified as G/TBT/N/USA/2218), the California Air Resources Board (CARB) announced the original notice of public hearing scheduled for 24 July 2025, to consider approving the Proposed Amendments to the Advanced Clean Trucks Regulation and the Zero–Emission Powertrain Certification Test Procedure. Please be advised that the Proposed Amendments to the Advanced Clean Trucks Regulation and the Zero–Emission Powertrain Certification Test Procedure including test procedures and other rulemaking documents relating to these rules have been withdrawn. Pursuant to Government Code section 11347, publication of this Notice of Decision Not to Proceed hereby terminates the rulemaking action, as published on 30 May 2025, in the California Regulatory Notice Register. California Notice Register No. 20-Z, 15 May 2026, page 700:
California Air Resources Board (CARB) Proposed Amendments to the Advanced Clean Trucks Regulation and the Zero-Emission Powertrain Certification Test Procedure - The proposed amendments to the ACT regulation include the following modifications: • Add an option for manufacturers to use surplus ZEV and near zero emission vehicle (NZEV) credits generated in one state that has adopted the ACT regulation to assist with meeting their ACT compliance obligations in another state. The proposed pooling flexibility implements a declining annual credit transfer allowance for the 2027 through 2031 model years that dictates how many credits can be transferred in a given year into a state with a deficit. These allowances would begin at 20% in 2027 and decrease by 2% each year, reaching 12% in 2031. The credit transfer allowance would then be constant at 10% for the 2032 through 2035 model years. • Modify the Low Tractor Volume provision to permit manufacturers to offset a portion of deficits generated in the Class 7-8 tractor group with Class 2b-3 or Class 4-8 group ZEV credits for each model year. • Decrease the minimum all-electric range threshold for NZEVs after the 2030 model year. • Provide manufacturers increased flexibility with respect to the order in which they retire ZEV credits. • Modify the communication protocols with respect to the ZEV connector criteria in the ZEP Certification regulation.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/2218/Add.1
CARB Withdrawal of Advanced Clean Trucks Pooling Amendments
By notice dated 13 May 2025, and published in the 30 May 2025, California Regulatory Notice Register, Register 2025, Number 22–Z (notified as G/TBT/N/USA/2218), the California Air Resources Board (CARB) announced the original notice of public hearing scheduled for 24 July 2025, to consider approving the Proposed Amendments to the Advanced Clean Trucks Regulation and the Zero–Emission Powertrain Certification Test Procedure. Please be advised that the Proposed Amendments to the Advanced Clean Trucks Regulation and the Zero–Emission Powertrain Certification Test Procedure including test procedures and other rulemaking documents relating to these rules have been withdrawn. Pursuant to Government Code section 11347, publication of this Notice of Decision Not to Proceed hereby terminates the rulemaking action, as published on 30 May 2025, in the California Regulatory Notice Register. California Notice Register No. 20-Z, 15 May 2026, page 700:
Regular notificationG/TBT/N/USA/2218
Comment deadline: Closed on 14 July 2025
Advanced Clean Trucks Pooling Amendments
California Air Resources Board (CARB) Proposed Amendments to the Advanced Clean Trucks Regulation and the Zero-Emission Powertrain Certification Test Procedure - The proposed amendments to the ACT regulation include the following modifications: • Add an option for manufacturers to use surplus ZEV and near zero emission vehicle (NZEV) credits generated in one state that has adopted the ACT regulation to assist with meeting their ACT compliance obligations in another state. The proposed pooling flexibility implements a declining annual credit transfer allowance for the 2027 through 2031 model years that dictates how many credits can be transferred in a given year into a state with a deficit. These allowances would begin at 20% in 2027 and decrease by 2% each year, reaching 12% in 2031. The credit transfer allowance would then be constant at 10% for the 2032 through 2035 model years. • Modify the Low Tractor Volume provision to permit manufacturers to offset a portion of deficits generated in the Class 7-8 tractor group with Class 2b-3 or Class 4-8 group ZEV credits for each model year. • Decrease the minimum all-electric range threshold for NZEVs after the 2030 model year. • Provide manufacturers increased flexibility with respect to the order in which they retire ZEV credits. • Modify the communication protocols with respect to the ZEV connector criteria in the ZEP Certification regulation.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
WTO notificationTBTAdopted, according to its latest noticeNew
Proposed rule - The Environmental Protection Agency (EPA) is proposing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and are also subject to an Order issued by EPA pursuant to…
Symbol: G/TBT/N/USA/2289/Add.2Comment period closed
WTO notificationTBTAdopted, according to its latest noticeNew
Proposed rule - In this document, the Space Bureau (Bureau or we) within the Federal Communications Commission (Commission) seeks comment on potential revisions to the set of geostationary (GSO) satellite network reference links adopted in the Modernizing Spectrum Sharing for Satellite Broadband…
Symbol: G/TBT/N/USA/2217/Rev.1/Add.1Comment period closed
WTO notificationTBTProposed measure, open for commentsNew
Notice of proposed rulemaking - The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes updating its regulations for liquefied natural gas (LNG) facilities to incorporate by reference the most recent industry safety standards and to make other changes to account for more than…
Symbol: G/TBT/N/USA/2329Comments until 4 January 2027
WTO notificationTBTProposed measure, open for commentsNew
Proposed rule - The Environmental Protection Agency (EPA) is proposing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and are also subject to an Order issued by EPA pursuant to…
Symbol: G/TBT/N/USA/2328Comments until 2 December 2026
Expodite matches each notification to the markets you export to and the HS codes of your products, and puts the ones that concern you in your Updates centre, with the date comments close.