Figure 2: Relationship of BTS Freight Transportation Services Index to Economic, January 1979 to December 2018
Figure

Dataset Excel:
Figure2.xlsx (59.1 KB)Notes:
Shaded areas indicate decelerations (slowdowns in growth) in the economy, and areas between indicate accelerations (growth) in the economy.
Detrending and smoothing refer to statistical procedures that make it easier to observe changes in upturns and downturns of the data. Detrending removes the long-term growth trend and smoothing removes month-to-month volatility.
Description:
Figure 2 from the Bureau of Transportation Statistics' What the Transportation Services Index, Dow Transportation Index, and Cass Freight Index Tell Us
Source:
U.S. Department of Transportation, Bureau of Transportation Statistics, Transportation Services Index, available at https://data.bts.gov/Research-and-Statistics/Transportation-Services-Index-and-Seasonally-Adjus/bw6n-ddqk/about_data as of June 2019.