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Optimisation of simultaneous train formation and car sorting at marshalling yards

Authors:

Sara Gestrelius, Florian Dahms, Markus Bohlin

Research groups:

Artificial Intelligence and Intelligent Systems
Complex Real-Time Embedded Systems

Publication Type:

Conference/Workshop Paper

Venue:

Proceedings of the 5th International Conference on Railway Operations Modelling and Analysis

Abstract

Efficient and correct freight train marshalling is vital for high quality carload freight transportations. During marshalling, it is desirable that cars are sorted according to their individual drop-off locations in the outbound freight trains. Furthermore, practical limitations such as non-uniform and limited track lengths and the arrival and departure times of trains need to be considered. This paper presents a novel optimisation method for freight marshalling scheduling under these circumstances. The method is based on an integer programming formulation that is solved using column generation and branch and price. The approach minimises the number of extra shunting operations that have to be performed, and is evaluated on real-world data from the Hallsberg marshalling yard in Sweden.

Bibtex

@inproceedings{Gestrelius3866,
author = {Sara Gestrelius and Florian Dahms and Markus Bohlin},
title = {Optimisation of simultaneous train formation and car sorting at marshalling yards},
month = {May},
year = {2013},
booktitle = {Proceedings of the 5th International Conference on Railway Operations Modelling and Analysis },
url = {http://www.es.mdu.se/publications/3866-}
}