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EPA/OAR RIN: 2060-AT21 Publication ID: Fall 2020 
Title: Vehicle Test Procedure Adjustments for Tier 3 Test Fuel 
Abstract: This rule would amend vehicle test procedures to account for current transition in the test fuels used for compliance testing under EPA and National Highway Traffic Safety Administration (NHTSA) joint greenhouse gas (GHG) emissions and corporate average fuel economy standards (CAFE) (77 FR 62624) and EPA's Tier 3 standards (79 FR 23414, April 28, 2014). This would ensure that testing results are consistent across both programs and avoid changes in the stringency of the GHG/Fuel Economy program. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: Fully or Partially Exempt 
CFR Citation: 40 CFR 86   
Legal Authority: 42 U.S.C. 7619 Clean Air Act   
Legal Deadline:
Action Source Description Date
Action Date FR Cite
NPRM  05/13/2020  85 FR 28564   
Final Rule  06/00/2021 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 336111 Automobile Manufacturing; 336112 Light Truck and Utility Vehicle Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Tad Wysor
Environmental Protection Agency
Office of Air and Radiation
Ann Arbor, MI 48105
Phone:734 214-4332
Fax:734 214-4816