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Table 1: Description of the Bureau of Transportation Statistics Freight Transportation Services Index, Dow Transportation Index, and Cass Freight Index

Dataset Table:

Index Basis Frequency of publication Release Date Adjustments 1
BTS Freight Transportation Services Index Ton miles shipped for five freight for-hire transportation modes. Monthly Data for given month released at the beginning of the month two months later Seasonally adjusted and weighted by dollar contribution of the modes to the economy. 2
Dow Transportation Index Stock prices of 20 large for-hire transportation companies. Daily Same day as day data calculated for Periodic changes to the stocks in the index; adjusted for stock splits. 3
Cass Freight Index Shipments and freight expenditures of shippers purchasing for-hire transportation using Cass Information Systems. Monthly Data for previous month released the month after Tonnage is summed across modes. Not seasonally adjusted. 4

Dataset Excel: