G/TBT/N/USA/1567/Add.1  
 
30 March 2022  
(22-2594) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
NOTIFICATION  
Addendum  
The following communication , dated  29 March 2022, is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title:  Control of Air Pollution From New Motor Vehicles: Heavy -Duty Engine Standards  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[ ] Notified measure published - date:  
[ ] Notified measure enters into force - date:  
[ ] Text of final measure available from1:  
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[X] Content or scope of notified measure changed  and text available from1: 
https://www.govinfo.gov/content/pkg/FR -2022-03-28/html/2022 -04934.htm  
https://www.govinfo.gov/content/pkg/FR -2022-03-28/pdf/2022 -04934.pdf  
https://members.wto.org/crnattachments/2022/TBT/USA/modification/22_2413_00_e.
pdf 
https://members.wto.org/crnattachments/2022/TBT/USA/modification/22_2413_01_e.
pdf 
Written comments must be received on or before 13 May 2022. Under the Paperwork 
Reduction Act (PRA), comments on the information collection provisions are be st assured 
of consideration if the Office of Management and Budget (OMB) receives a copy of your 
comments on or before 27 April 2022.  
The Environmental Protection Agency plans to hold a virtual public hearing on 12 April 
2022. An additional session may be held on 13 April 2022. Please  refer to Participation 
in Virtual Public Hearing in the SUPPLEMENTARY INFORMATION section for additional 
information on the public hearing.  
New deadline for comments (if applicable):  13 May 2022  
[ ] Interpretive guidance issu ed and text available from1:  
[ ] Other:  
 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1567/Add.1  
 
- 2 - 
 
  Description:  TITLE: Control of Air Pollution From New Motor Vehicles: Heavy -Duty Engine and 
Vehicle Standards  
 
AGENCY: Environmental Protection Agency (EPA)  
 
ACTION: Proposed rule  
 
SUMMARY: The Environmental Protection Agency (EPA) is proposing a rule that would reduce air 
pollution from highway heavy -duty vehicles and engines, including ozone, particulate matter, and 
greenhouse gases. This proposal would change the he avy-duty emission control program --including 
the standards, test procedures, useful life, warranty, and other requirements --to further reduce the 
air quality impacts of heavy -duty engines across a range of operating conditions and over a longer 
period of t he operational life of heavy -duty engines. Heavy -duty vehicles and engines are important 
contributors to concentrations of ozone and particulate matter and their resulting threat to public 
health, which includes premature death, respiratory illness (includ ing childhood asthma), 
cardiovascular problems, and other adverse health impacts. This proposal would reduce emissions 
of nitrogen oxides and other pollutants. In addition, this proposal would make targeted updates to 
the existing Heavy -Duty Greenhouse Gas  Emissions Phase 2 program, proposing that further GHG 
reductions in the MY 2027 timeframe are appropriate considering lead time, costs, and other factors, 
including market shifts to zero -emission technologies in certain segments of the heavy -duty vehicle 
sector. We also propose limited amendments to the regulations that implement our air pollutant 
emission standards for other sectors (e.g., light -duty vehicles, marine diesel engines, locomotives, 
various types of nonroad engines, vehicles, and equipment).  
  
DATES:  
Comments: Written comments must be received on or before 13 May 2022. Under the Paperwork 
Reduction Act (PRA), comments on the information collection provisions are best assured of 
consideration if the Office of Management and Budget (OMB) receives a copy of your comments on 
or before 27 April 2022.  
  
Public Hearing: EPA plans to hold a virtual public hearing on 12 April 2022. An additional session 
may be held on 13 April 2022. Please refer to Participation in Virtual Public Hearing in the 
SUPPLEMENTARY INFORMATION section for additional information on the public hearing.  
  
This proposed rule and the advanced notice of proposed rulemaking notified as G/TBT/N/USA/1567  
are identified by Docket Number EPA -HQ-OAR-2019-0055. The Docket Folder is available from 
Regulations.gov at https://www.regulations.gov/docket/EPA -HQ-OAR-2019-0055/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 
stake holders are asked to submit comments to the USA TBT Enquiry Point  by or before 4pm Eastern 
Time on 13 May 2022. Comments received by the USA TBT Enquiry Point from WTO Members and 
their stakeholders will be shared with the regulator and will also be submitted to the Docket  on 
Regulations.gov if received within the comment period.  
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