Examples of corporate distribution and transportation planning using the princeton transportation network model and graphic information system

For the past 8 years researchers at Princeton have been developing an interactive high resolution computer graphic system which is specifically designed to address transportation network problems. The system utilizes a combination of state-of-the-art hardware and software. It has been made specific to rail, highway, waterway and urban transportation network problems of the U.S. and Canada. The analytical, stimulation, graphic and interactive techniques are applicable to transportation network problems of other geographic areas. The paper presents the hardware and algorithmic philosophies used to develop this most valuable network analysis and simulation environment. Described are data structure, computational procedures, hardware configuration and data sources. Included are examples of the wide range of network problems which are continuing to be addressed using this system. Included are issues of commodity transport (coal), railroad operations and car management, intemodal traffic and market analysis, analysis of mergers, and analysis of modal shares and modal flows.