Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Ton-Miles, Not Seasonally Adjusted

Frequency:  Monthly

Data For "Revenue Ton-Miles " Exclude Switching And Terminal Companies. Data For "Coal Consumption" Exclude These Components From 1920-1936; Include Them Thereafter. Source: Computed By NBER By Dividing Series 03037 (Revenue Ton-Miles) By Series 03047 (Tons Of Coal Or Equivalent Consumption In Road Freight Service); Data Are From Interstate Commerce Commision Sources.

This NBER data series m03048 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03048