Transportation is a significant source GHG emissions, accounting for almost 28% of total U.S. greenhouse gas (GHG) emissions in 2004*. Over the period 1990 to 2004, GHG emissions from the transportation sector increased at the fastest rate of any end-use economic sector in the U.S. and accounted for the largest absolute increase of any sector. The largest sources of U.S. transportation GHG emissions continue to be light-duty vehicles, heavy-duty trucks and aircraft.
The Climate Policy Program is no longer active at New America. This resource can now be found at seventhgenerationadvisors.org.
