OVERVIEW OF COMPUTER-BASED MODELS APPLICABLE TO FREIGHT CAR UTILIZATION
This report documents a study performed to identify and analyze twenty-two of the important computer-based models of railroad operations. The models are divided into three categories: network simulations, yard simulations, and network optimizations. The simulations are used to assess the impact of certain operating policies and planning procedures. The network simulations examine system-wide effects, while the yard simulations focus on the operations performed within a single yard. Network optimizations typically are used to calculate optimal distribution for a rail system's empty freight cars based on the railroad's car distribution rules and goals. The description of each model includes its history, design approach, fundamental logic, unusual features, hardware and software specifications, and its extent of application. In the case of a model's implementation on a rail system, attempts were made to obtain test results and evaluations. This served as a basis for reviewing each model.
- Prepared for U.S. Department of Transportation, Federal Railroad Administration, Policy and Program Development, Washington, D.C.
Transportation Systems Center55 Broadway, Kendall Square
Cambridge, MA USA 02142
- BAKER, L
- Publication Date: 1977-10
- Pagination: 96 p.
- TRT Terms: Car distribution (Railroads); Computer programs; Consolidations; Layout; Lines of track; Network analysis (Planning); Operations; Planning; Railroad yards; Relocation (Facilities); Scheduling; Simulation; Yard operations
- Old TRIS Terms: Line relocation; Operations planning; Yard layout planning; Yard simulation models
- Subject Areas: Administration and Management; Freight Transportation; Planning and Forecasting; Railroads; Terminals and Facilities;
- Accession Number: 00170060
- Record Type: Publication
- Source Agency: Federal Railroad Administration
- Report/Paper Numbers: FRA-OPPD-77-12 Final Rpt.
- Files: NTIS, TRIS, USDOT
- Created Date: Jan 30 1978 12:00AM