Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Ton-Miles, Not Seasonally Adjusted

Frequency:  Monthly

Data Were Obtained By NBER By Dividing Series 03001 (Railroad Revenue And Non-Revenue Freight Ton-Miles) By Series 03045 (Freight Train-Miles). Non-Revenue Ton-Miles Are Included In The Data For Series 03045. Data Exclude Switching And Terminal Companies Throughout. Source: Interstate Commerce Commision, Data For 1920-1934: "Freight And Passenger Service Operating Statistics Of Class I Steam Railways In The United States". Data For 1935-1943: "Freight Train Performance Of Class I Steam Railways In The United States".

This NBER data series m03046 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.

NBER Indicator: m03046