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Cluster :  Railroad Applications

Session Information  : Monday Oct 25, 10:00 - 11:30

Title:  OR Applied to Railroads III
Chair: Michael Gorman,Professor, Univerisity of Dayton, School of Business, Dept of MIS/OM/DSC, 300 College Park, Dayton OH 45469, United States, Michael.Gorman@notes.udayton.edu

Abstract Details

Title: Maintenance Gang Scheduling
 Presenting Author: Michael Gorman,Professor, Univerisity of Dayton, School of Business, Dept of MIS/OM/DSC, 300 College Park, Dayton OH 45469, United States, Michael.Gorman@notes.udayton.edu
 
Abstract: We explore the annual planning of rail maintenance gang scheduling at BNSF railway. The problem is akin to job scheduling and allocation on parallel machines with sequence-dependent setup times. The problem is further complicated through various precedence, sequencing, and simultaneity constraints between jobs. We consider a number of formulations and solution methodologies to this problem, and make recommendations as to the most appropriate approach to solving the problem.
  
Title: Stage-wise Approach to Solve Train Scheduling Problem
 Presenting Author: Krishna Jha,Research Director, Innovative Scheduling Systems, 2153 SE Hawthorne Rd, Suite 128, Gainesville FL 32641, United States, kcjha@ufl.edu
 
Abstract: For a typical US railroad, the train scheduling problem is extremely large and complex combinatorial optimization problem. We decompose the problem in four stages, which makes the size of sub-problems manageable in every stage. We have developed network flow based heuristics to solve the sub-problems. We also present the computational results for a real life problem instance.
  
Title: Railroad Line Capacity Simulation Modeling
 Presenting Author: Edwin R "Chip" Kraft,Director, Operations Planning, Transporation Economics + Management Systems, Inc., 116 Record St, Frederick Md 21701, United States, ckraft@temsinc.com
 
Abstract: MISS-IT is a new event-based line capacity model for testing the effects of additional infrastructure, signaling systems, or revised operating and dispatch practices. The presentation will focus on how MISS-IT simulates a moving-block PTC environment, as well as recent installation of "backtracking" logic to ensure development of feasible train dispatching plans.