Maintaining tracks and traffic flow at the same time

Projekt:

Tågplan 2015 LEAN och Marackasen: Tidtabellkonstruktion med optimerat spårutnyttjande och transportkvalitet

Sammanfattning:
In an ideal world, all railway tracks would be available to trains at all times. In reality, track
sections need to be closed every now and again for track maintenance and upgrades in order
to ensure a satisfactory level of safety and comfort. In this paper, we present a MIP model
that optimizes a production plan with regard to both trains and preventive maintenance.
The planned maintenance activities may not be canceled, but may be moved in time within
pre-defined time windows. Trains may be moved in time, redirected to other parts of the
geography, or even canceled. The goal for the optimization is to find the best possible
traffic flow given a fixed set of planned maintenance activities. In addition to presenting the
model, we discuss the current maintenance planning process in Sweden, and exemplify the
usefulness of our model in practice by applying it to two typical scenarios.

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Författare: Malin Forsgren, Martin Aronsson, Sara Gestrelius
Utgivare: SICS Malin Forsgren, Martin Aronsson, Sara Gestrelius
Utgivningsdatum: 2011-12-31
Diarienummer: TRV 2010/25229
Antal sidor: 20
Språk: Engelska
Kontaktperson: Hans Dahlberg, TRpa och Hans Stenbacka, TRvss