GLOBAL SOLUTIONS FOR A NONCONVEX, NONCONCAVE RAIL NETWORK MODEL

This paper is concerned with developing long-range planning models of transportation systems to assist planners in assessing the impact of various levels of service in a transportation network. Railroad distribution networks are studied in particular, and emphasis is placed on the problem of determining optimal levels of service (improvements, degradations, abandonments) on each arc in the existing network. The problem is to optimally design a transportation system; the term "design" , as used here, does not comprehend new networks, but more importantly, the optimization or "pruning" of existing transshipment networks. The model is formulated so that improvements to the shipping arcs are included as decision variables: The concave transshipment problem is extended to the case where coefficients of the shipping cost functions are treated as decision variables.

• Corporate Authors:

  Institute of Management Sciences

  146 Westminster Street
  Providence, RI  United States  02903
• Authors:
  • LeBlanc, L J
• Publication Date: 1976-10

Media Info

• Features: References;
• Pagination: p. 131-139
• Serial:
  • MANAGEMENT SCIENCE
  • Volume: 23
  • Issue Number: 2

Subject/Index Terms

• TRT Terms: Freight transportation; Mathematical models; Network analysis (Planning); Nonlinear programming; Operations research
• Subject Areas: Data and Information Technology; Freight Transportation; Railroads;

Filing Info

• Accession Number: 00156214
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jul 19 1977 12:00AM