NETWORK ANALYSIS OF HIGHWAY AND INTERMODAL RAIL-HIGHWAY FREIGHT TRAFFIC.

The analysis capabilities of the Princeton highway and intermodal rail-highway network models are described. These network models are extensions of the Princeton railroad network model and graphic information system and are based on a geocoded network representation of intermodal transfer locations and the U. S. highway system. The models contain efficient routing and traffic asignment algorithms, highway and rail costs models, and extensive network editing and compute graphic utilities. Examples of highway and intermodal routes and a graphic analysis of the railside flows of 1980 intermodal traffic based on the 1980 one percent waybill sample are presented.