Monthly Output Index for the U.S. Transportation Sector

We develop a monthly output index of the U.S. Transportation sector over 1980:1-2002:4 covering air, rail, water, truck, transit and pipeline activities. Separate indexes for freight and passenger are also constructed. Our total transportation output index matches very well with the annual transportation output figures produced by the Bureau of Labor Statistics (BLS) and the Bureau of Economic Analysis (BEA). The strong cyclical movements in the transportation output appear to be more synchronized with the growth slowdowns rather than full-fledged recessions of the U.S. economy. The index has led the turning points of the six NBER-defined growth cycles over the period with an average lead-time of 6 months at peaks and 5 months at troughs.

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