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Introducing a New Quantitative Measure of Railway Timetable Robustness Based on Critical Points
Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
2013 (Engelska)Ingår i: 5th International Seminar on Railway Operations Modelling and Analysis - RailCopenhagen 2013, 2013Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The growing demand for railway capacity has led to high capacity consumption at times and a delay-sensitive network with insufficient robustness. The fundamental challenge is therefore to decide how to increase the robustness. To do so there is a need for accurate measures that return whether the timetable is robust or not and indicate where improvements should be made. Previously presented measures are useful when comparing different timetable candidates with respect to robustness, but less useful to decide where and how robustness should be inserted. In this paper, we focus on points where trains enter a line, or where trains are being overtaken, since we have observed that these points are critical for the robustness. The concept of critical points can be used in the practical timetabling process to identify weaknesses in a timetable and to provide suggestions for improvements. In order to quantitatively assess how crucial a critical point may be, we have defined the measure RCP (Robustness in Critical Points). A high RCP value is preferred, and it reflects a situation at which train dispatchers will have higher prospects of handling a conflict effectively. The number of critical points, the location pattern and the RCP values constitute an absolute value for the robustness of a certain train slot, as well as of a complete timetable. The concept of critical points and RCP can be seen as a contribution to the already defined robustness measures which combined can be used as guidelines for timetable constructors.

Ort, förlag, år, upplaga, sidor
2013.
Nyckelord [en]
Timetabling, robustness measures, railway traffic
Nationell ämneskategori
Transportteknik och logistik
Identifikatorer
URN: urn:nbn:se:liu:diva-92712ISBN: 978-87-7327-246-6 (tryckt)OAI: oai:DiVA.org:liu-92712DiVA: diva2:621709
Konferens
5th International Seminar on Railway Operations Modelling and Analysis, Copenhagen, May 13-15, 2013
Tillgänglig från: 2013-05-16 Skapad: 2013-05-16 Senast uppdaterad: 2013-05-30

Open Access i DiVA

RailCopenhagen(601 kB)304 nedladdningar
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Typ fulltextMimetyp application/pdf

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Av författaren/redaktören
Andersson, EmmaPeterson, AndersTörnquist Krasemann, Johanna
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Kommunikations- och transportsystemTekniska högskolan
Transportteknik och logistik

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