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DOT/NHTSA RIN: 2127-AL31 Publication ID: 2012 
Title: ●Corrections and Minor Revisions to the MY 2014-2018 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles 
Abstract: National Highway Traffic Safety Administration (NHTSA) and the Environmental Protection Agency (EPA) developed the first-ever program to reduce greenhouse gas (GHG) emissions and fuel consumption in the heavy-duty highway vehicle sector. This broad sector – ranging from large pickups to sleeper-cab tractors – together represent the second largest contributor to oil consumption and GHG emissions from the mobile source sector, after light-duty passenger cars and trucks. The final rule was published in the Federal Register on September 15, 2011 (76 FR 57106). NHTSA is issuing this rulemaking to revise portions of the regulations in 49 CFR part 535 to correct technical errors and gaps identified in the promulgated MY 2014-2018 Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles final rule. 
Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 49 CFR 523    49 CFR 535   
Legal Authority: 49 USC 32902    delegation of authority at 49 CFR 1.50   
Legal Deadline:  None
Timetable:
Action Date FR Cite
Direct Final Rule  03/00/2013 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: www.regulations.gov   Public Comment URL: www.regulations.gov  
RIN Data Printed in the FR: No 
Related RINs: Related to 2127-AK74 
Agency Contact:
James Tamm
Fuel Economy Division Chief
Department of Transportation
National Highway Traffic Safety Administration
1200 New Jersey Avenue SE,
Washington, DC 20590
Phone:202 493-0515
Email: james.tamm@dot.gov