Figure 1-9 Rail Freight Intermodal, 2000 to 2016

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Figure 1-8 Rail Freight Carloads, 2000 to 2016

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NOTES: Monthly rail carloads and intermodals are estimated by dividing the weekly sum by 7 (7 days in a week) and then summing for the number of days in the month (31 days for May, 30 days for June, etc.).

SOURCES: U.S....

Figure 1-7 Truck Tonnage Index, 2000 to 2016

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Box 1-4 Seasonal Adjustment

Seasonal adjustment is the process of estimating and removing seasonal movement. Seasonal adjustment decomposes a time series into a seasonal part and an irregular part. The goal is to remove changes in the data happening at the same time and with the same magnitude and direction every year...

Figure 1-6 Monthly Freight TSI and Inventory to Retail Sales Ratio, 2000 to 2016

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Figure 1-5 Monthly Industrial Production, Manufacturers’ Shipments, and Freight TSI, 2000 to 2016

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Box 1-3 Industrial Production and Manufacturers’ Shipments

The Industrial Production Index is published monthly by the Federal Reserve Board and measures real output in the U.S. industrial sector, which includes manufacturing, mining, and electric and gas utilities.

Data on manufacturers’ shipments come from the Census Bureau’s...

Figure 1-4 Quarterly GDP, Foreign Trade, and Freight TSI, 2000 to 2015

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Figure 1-3 Freight TSI and the Economic Growth Cycle, 1979 to 2015

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Figure 1-2 Transportation Services Index, 2000 to 2015

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