Operating a model railroad in a prototypical manner is one of the many great aspects of this hobby.  Realistic operations is something that can be shared with other model railroaders.  Operations include setting up systems to simulate the movement of freight cars on the railroad and some means of dispatching trains.  The Operations Special Interest Group (OpSIG) is a great resource of information on operating model railroads.

Click the OpSIG logo for information about the Operations Special Interest Group of the NMRA






The National Model Railroad Association (NMRA) is another source of information.  Click the NMRA logo to go to the NMRA web pages.

NMRA Link


The following documents were originally located in the Files Section of the OpSIG Yahoo Group


AAR Freight Car Codes

This file was originally in the CompuServe TrainNet Library.  The file contains three versions of the code
based on AAR practices in 1932, 1958, and 1987

AAR Freight Car Codes PDF 109 KB


AAR Passenger Car Codes

The following information was taken from Sections 5 and 6 of the 1957 Car Builder’ Cyclopedia
of American Practice published by Simmons-Boardman Publishing Company.

AAR Passenger Car Codes PDF 24 KB
 
 

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