A mathematical modeling approach to improving locomotive utilization at a freight railroad
AbstractMoving freight by rail remains one of the major transportation modes in today's business world. Although railcars compare unfavorably with trucks and airplanes with respect to mobility, flexibility, and speed, the shipping costs are lower and the energy-efficiency is higher. In order to become more competitive in the logistics industry, railroads have taken a number of new initiatives to improve their operations in recent years. One of such efforts made by Consolidated Rail Corporation (Conrail) is described in this paper. The main focus of the present study is on helping Conrail increase the utilization of its locomotive fleet by developing a mixed integer linear program (MILP) to determine the least-cost plan of allocating locomotives to yards and moving light engines between yards. The MILP is tested on a set of real data gathered at Conrail and it is proven to be superior to the existing method. A simple sensitivity analysis is also performed to gain insight into the trade-off between investment in additional locomotives and cost of light engine moves.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoArticle provided by Elsevier in its journal Omega.
Volume (Year): 35 (2007)
Issue (Month): 5 (October)
Contact details of provider:
Web page: http://www.elsevier.com/wps/find/journaldescription.cws_home/375/description#description
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
- Kowalski, Krzysztof & Lev, Benjamin, 2008. "On step fixed-charge transportation problem," Omega, Elsevier, vol. 36(5), pages 913-917, October.
- Chung, Ji-Won & Oh, Seog-Moon & Choi, In-Chan, 2009. "A hybrid genetic algorithm for train sequencing in the Korean railway," Omega, Elsevier, vol. 37(3), pages 555-565, June.
- Arsham, Hossein & Adlakha, Veena & Lev, Benjamin, 2009. "A simplified algebraic method for system of linear inequalities with LP applications," Omega, Elsevier, vol. 37(4), pages 876-882, August.
- Dalalah, Doraid & Lev, Benjamin, 2009. "Duality of the improved algebraic method (DIAM)," Omega, Elsevier, vol. 37(5), pages 1027-1035, October.
If references are entirely missing, you can add them using this form.