G/TBT/N/USA/1991  
8 May 2023 
(23-3244) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UNITED STATES OF AMERICA  
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:  Environmental Protection Agency (EPA) [2022]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated i f different from above:   
Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov  
3. Notified under Article 2.9.2 [X], 2.10.1 [  ], 5.6.2 [X], 5.7.1 [  ], 3.2 [  ], 7.2 [  ], 
other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Light-duty 
vehicles and Class 2b and 3 ("medium -duty") vehicles; Multi -pollutant emissions; Quality 
(ICS code(s): 03.120); Environmental protection (ICS code(s): 13.020); Air quality (ICS 
code(s): 13.040); Road vehicle systems (ICS code(s): 43.040); Fuel systems (ICS 
code(s): 43.060.40); Electric road vehicles (ICS code(s): 43.120)  
5. Title, number of pages and langu age(s) of the notified document:  Multi-Pollutant 
Emissions Standards for Model Years 2027 and Later Light -Duty and Medium -Duty 
Vehicles; (263 page(s), in English)  
6. Description of content:  Proposed rule - Under its Clean Air Act  authority, the 
Environmental Protection Agency (EPA) is proposing new, more stringent emissions 
standards for criteria pollutants and greenhouse gases (GHG) for light - duty vehicles a nd 
Class 2b and 3 ("medium -duty") vehicles that would phase -in over model years 2027 
through 2032. In addition, EPA is proposing GHG program revisions in several areas, 
including off -cycle and air conditioning credits, the treatment of upstream emissions 
associated with zero -emission vehicles and plug -in hybrid electric vehicles in compliance 
calculations, medium -duty vehicle incentive multipliers, and vehicle certification and 
compliance. EPA is also proposing new standards to control refueling emissions f rom 
incomplete medium -duty vehicles, and battery durability and warranty requirements for 
light-duty and medium -duty plug -in vehicles. EPA is also proposing minor amendments 
to update program requirements related to aftermarket fuel conversions, importing 
vehicles and engines, evaporative emission test procedures, and test fuel specifications 
for measuring fuel economy.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of the environment; Quality requirements  G/TBT/N/USA/1991  
 
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  8. Relevant documents:   
88 Federal Register (FR) 29184, 5 May 2023; Title 40 Code of Federal Regulations (CFR) 
Parts 85, 86, 600, 1036, 1037, and 1066:  
https://www.govi nfo.gov/content/pkg/FR -2023-05-05/html/2023 -07974.htm  
https://www.govinfo.gov/content/pkg/FR -2023-05-05/pdf/2023 -07974.pdf  
Public Hearing for Multi -Pollutant Emissions Sta ndards for Model Years 2027 and Later 
Light-Duty and Medium -Duty Vehicles, Notification of public hearing published 24 April 
2023 
https://www.govinfo.gov/content/pkg/FR -2023-04-24/html/2023 -07965.htm  
https://www.govinfo.gov/content/pkg/FR -2023-04-24/pdf/2023 -07965.pdf  
A two -day virtual public hearing  will be held on 9 and 10 May 2023 on the proposal titled 
"Multi -Pollutant Emissions Standards for Model Years 2027 and Later Light -Duty and 
Medium -Duty Vehicles," which was signed by Administrator Regan on 11 April 2023. An 
additional session may be held on 11 May 2023, if necessary to accommodate the number 
of testifiers that sign up to testify. Please refer to the SUPPLEMENTARY INFORMATION 
section here for additional in formation on the public hearing and registration. See EPA's 
light-duty GHG website at https://www.epa.gov/regulations -emissions -vehicles -and-
engines/proposed -rule-multi-pollutant -emissions -standards -model  for any updates to 
this scheduled hearing as EPA does not intend to publish a document in the Federal 
Register announcing updates.  
This proposed rule and the notification o f public hearing are identified by Docket Number 
EPA-HQ-OAR-2022-0829. The Docket Folder is available on Regulations.gov at 
https://www.regulations.gov/docket/EPA -HQ-OAR-2022-0829/document  and provides 
access to primary and supporting documents as well as comments received. Documents 
are also accessible from Regulations.gov  by searching the Docket Number. WTO Members 
and their stakeho lders are asked to submit comments to the USA TBT Enquiry Point . 
Comments received by the USA TBT Enquiry Point from WTO Members and their 
stakeholders by 4pm Eastern Time  on 5 July 2023 will be shared with the regulator and 
will also be submitted to the Docket  on Regulations.gov if received within the comment 
period.  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  5 July 2023  
11. Texts available from:  National enquiry point [ ] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
https://membe rs.wto.org/crnattachments/2023/TBT/USA/23_09522_00_e.pdf