(Source: Bureau of Transportation Statistics, USDOT)

The Bureau of Transportation Statistics of the Research and Innovative Technology Administration has released “A Time Series Analysis of Transportation Energy Use Per Dollar of Gross Domestic Product” (GDP), a report about the decline in transportation energy use relative to GDP.  The statistical analysis shows that transportation energy consumption has been declining relative to GDP since 2000 with a steeper decline beginning in the third quarter of 2007, when the cost of fuel rose dramatically.

Transportation energy use relative to gross domestic product (GDP) has been declining within the past decade. However, the total transportation energy consumed (see figure 1) shows only a more recent decline. To see clearly the long-term decline, the seasonal component first must be separated from the underlying trendline to observe the long-term trend of that energy consumption. Then the ratio of the deseaonalized data and GDP can be taken.

The report is the first in the BTS series titled Transportation Trends in Focus.  The report can be found at http://www.bts.gov/publications/bts_transportation_trends_in_focus/2009_06_01/.