Freight Transportation GHG Emissions by Energy Source and Transportation Mode
  1990   2007 2008 2009 2010 2011 2012 2013 2014
Freight Transportation GHG Emissions (Mt of CO2e)a,b 47.7   78.2 79.4 77.2 82.9 83.2 83.2 84.4 85.1

GHG Emissions by Energy Source (Mt of CO2e)a,b
Natural Gas 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Motor Gasoline 11.4   19.2 19.4 20.0 20.9 20.1 20.6 21.7 22.0
Diesel Fuel Oil 30.3   51.5 52.5 49.5 54.2 56.8 56.1 56.5 57.5
Ethanol 0.0   0.4 0.4 0.5 0.6 0.9 1.0 0.9 1.0
Biodiesel Fuel 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Light Fuel Oil and Kerosene 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Heavy Fuel Oil 4.6   6.3 6.4 6.5 6.5 4.6 4.7 4.5 3.8
Aviation Gasoline 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Aviation Turbo Fuel 0.5   0.4 0.3 0.3 0.4 0.4 0.4 0.4 0.4
Propane 1.0   0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.3

GHG Emissions by Transportation Mode (Mt of CO2e)a,b
Light Trucks 6.7   11.7 11.6 11.8 12.1 12.1 12.4 12.9 13.0
Medium Trucks 8.2   17.2 18.1 19.4 21.7 21.2 21.0 22.0 22.0
Heavy Trucks 17.8   32.5 32.7 32.2 33.4 35.1 35.1 35.4 36.5
Air 0.5   0.4 0.3 0.3 0.4 0.4 0.4 0.4 0.4
Rail 6.7   7.2 7.6 4.9 6.4 7.3 7.4 7.1 7.4
Marine 7.9   9.3 9.0 8.7 9.0 7.2 7.0 6.6 5.9
GHG Intensity (tonne/TJ)a,b 71.2   71.4 71.4 71.1 71.2 71.1 71.1 71.0 70.9

Sources:

a) Natural Resources Canada, Transportation End-Use Model, Ottawa, 2016.
b) Environment and Climate Change Canada, National Inventory Report 1990–2014: Greenhouse Gas Sources and Sinks in Canada, Ottawa, 2016.