TABLE 2: 2014 - 2027 Medium- and Heavy-Duty Vehicle Emissions Standards

The document provides a technical breakdown of CO2 emissions standards measured in grams per ton-mile and grams per brake horsepower-hour for various vehicle classes and engine types between 2014 and 2027. It covers combination tractors (day and sleeper cabs), vocational vehicles, and trailers, categorized by weight classes (Class 2b through 8) and roof heights. The data shows a general trend of decreasing allowable CO2 emissions across all categories over the specified timeframe.

• The document outlines CO2 emissions standards for combination tractors across different cab types and weight classes from 2014 to 2027, measured in grams per ton-mile. For example, the standard for Class 8 Sleeper Cabs with a High Roof (>148") is projected to decrease from 124 in 2014-16 to 96 by 2027.
• Emissions standards for vocational vehicles are categorized by engine type (CI Engines/Diesel and SI Engines/Gasoline) and vehicle weight, including Light Heavy Duty (8,501-19,500 lbs), Medium Heavy Duty (19,501-33,000 lbs), and Heavy Heavy Duty (>33,000 lbs), with standards measured in CO2 grams per brake horsepower-hour.
• The standards for trailers are specified for the 2018-2020 period, distinguishing between Dry Box and Refrigerated Box trailers based on length, with long trailers (>50') having lower CO2 gram per ton-mile standards than short trailers (<50').

APA

Gutin, O., & Haven, P. (n.d.). TABLE 2: 2014 - 2027 Medium- and Heavy-Duty Vehicle Emissions Standards. Environmental and Energy Study Institute. https://www.eesi.org/files/Medium-Heavy_Truck_Standards_1-2-Table_2.pdf

Chicago

Gutin, Ori, and Paul Haven. TABLE 2: 2014 - 2027 Medium- and Heavy-Duty Vehicle Emissions Standards. Environmental and Energy Study Institute, n.d. https://www.eesi.org/files/Medium-Heavy_Truck_Standards_1-2-Table_2.pdf.

Wikipedia

{{cite report |last1=Gutin |first1=Ori |last2=Haven |first2=Paul |title=TABLE 2: 2014 - 2027 Medium- and Heavy-Duty Vehicle Emissions Standards |publisher=Environmental and Energy Study Institute |url=https://www.eesi.org/files/Medium-Heavy_Truck_Standards_1-2-Table_2.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{gutinndtable, author = {Gutin, Ori and Haven, Paul}, title = {{TABLE 2: 2014 - 2027 Medium- and Heavy-Duty Vehicle Emissions Standards}}, institution = {Environmental and Energy Study Institute}, url = {https://www.eesi.org/files/Medium-Heavy_Truck_Standards_1-2-Table_2.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }