The Princeton railroad network model: application of computer graphics in the analysis of a changing railroad industry.

Describes some capabilities of Princeton's Railroad Network Model, and focuses on some of its applications and on the uses of interactive computer graphics. Considers the importance of graphics for the presentation of data on railroad accidents and the density of hazardous-material traffic, the impact of mergers on the distribution of railroad traffic, the concept of participatory value, the concept of opportunity cost and its influence on railroads to participate in either controlled-transfer or directed-service proceedings, and the use of the model to define potentially better routing choices by shippers. Examples of current interest to the railroad industry are cited. -from Authors