The energy efficiency of the average car on the road increased slightly in 2014 as did air travel, but the average light truck and Amtrak used slightly more BTUs per passenger mile in 2014 than in 2013. That’s the finding from the latest edition of the Transportation Energy Data Book (6.5-MB PDF), which was posted on line on Monday. Specifically, these numbers are from tables 2-15, highway modes, and 2-16, non-highway modes.
The book is published each year by the Department of Energy’s Oak Ridge National Laboratory. In addition to the book in PDF format and the individual spreadsheets for each of the 250 tables in the book, they usually have a link to all the spreadsheets in ZIP format, but the isn’t available yet.
According to the spreadsheets, most forms of urban transit became a little more energy efficient in 2014. I suspect declining fuel prices will produce some different results for 2015. Transit ridership is falling, so transit’s energy efficiency per passenger mile is likely to decline, as is Amtrak’s. If falling fuel prices allowed airlines to keep fares lower and fill more seats, airline fuel efficiencies may increase.
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Automobile fuel efficiencies should continue to increase slightly even though low fuel prices reduced the growth in fuel efficiency. This is because cars sold in 2015 and 2016 are still more fuel efficient than the average car on the road.
