USOpen licence
Transit Rail (i.e. Subway, Tram)
0.058096kgCO₂e/p.kmGWP: AR6 (as published)
Published by U.S. EPA GHG Emission Factors Hub (Cornerstone Sustainability Data Initiative) in U.S. EPA GHG Emission Factors Hub (Cornerstone Sustainability Data Initiative) 2026.01 (Any year); last verified 2026-08-28.
Values by year and methodology
| Any year | 0.058096▣headline |
|---|
By gas
| co2 | 0.057788 | 99.5% |
| ch4 | 0.000139 | 0.2% |
| n2o | 0.00017 | 0.3% |
Cite this factor
open-climate.ai (n.d.). Transit Rail (i.e. Subway, Tram) [emission factor]. U.S. EPA GHG Emission Factors Hub (Cornerstone Sustainability Data Initiative), U.S. EPA GHG Emission Factors Hub (Cornerstone Sustainability Data Initiative) 2026.01. Dataset 2026-08-28. https://open-climate.ai/factors/ef-epa-transit_rail_ie_subway-us-pkm-combustion-da2d7505/