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Note: Greenhouse emissions in USA, transportation is largest at 29%, followed by electricity 28% and industry 22% https://www.epa.gov/ghgemissions/sources-gree

• microcolonel 7y ago
  DoT paints a more interesting picture: https://www.transportation.gov/sites/dot.gov/files/gas%20emissions%20from%20transportation.PNG https://www.transportation.gov/sites/dot.gov/files/gas%20emi... Passenger cars and motorcycles, combined, saw between 1990 and 2006 an increase of 3% in carbon dioxide emissions in absolute terms. Over the same period of time, medium- and heavy-duty trucks and buses saw their carbon dioxide emissions increase by 76% (!). Also notably, CO2 emitted by Aircraft decreased 5%, and Boats/Ships, Rail, "and Pipelines" (I'm not really sure of the mechanism for CO2 emissions from pipelines), decreased by 13%. I'd like to see more updated information, not sure why it's harder to come by, but it seems like there's more to it than passenger cars. The "Light-Duty Trucks" category is also hard to tease apart, because it inherently combines trucks used as passenger transport, and trucks used for utility.
  • vinaypai 7y ago
    > I'm not really sure of the mechanism for CO2 emissions from pipelines They aren't talking CO2 emissions per-se but greenhouse gas emissions in "CO2 equivalent". This is an important distinction because there are other greenhouse gases, most notable methane. My guess is the emissions from pipelines refers to methane leaking out of natural gas pipelines.