RELATION BETWEEN DEMAND AFTER TRAIN PATHS AND CAPACITY

OF RAILWAY TRANSPORT INFRASTRUCTURE

Ing. Josef Bulíček, Ph.D.

Ing. Lukáš Fiala

University of Pardubice, Czech Republic

EURO-Žel 2011, Žilina, Slovakia

2011-06-08

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Content of Presentation

1. Problem definition2. Operational side of problem3. Train paths demand and capacity4. Proposal of train paths classification5. Modelling of train paths6. Basic preconditions for modelling

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1 Problem Definition

• Free market in the railway sector,• non-discriminative way of access to infrastructure.

• Transport carriers: demand for train paths,• railway infrastructure manager: supply of paths.

• Problem: conflict requirements of more operators, capacity limitations,appropriate capacity consumption.

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2 Operational Side of Problem

• Priorities of trains?

• 2 levels of problem: basic (by allocating of capacity, time scheduling),operational (e.g. priorities in the case of delay).

• Relations to:transport system stability,inadequate preventing of any railway operator.

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3 Train Paths Demand and Capacity

• Capacity: Number of trains able to be operated on the line (infrastr. element) in certain time frame.

• Train path = part of railway infrastructure capacity.

• Relations to: technical and operational characteristics of the line,but also to characteristics of the train (path)

it is also depended on transport operator.

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Carrier requirements Timetable planning

Operations and control

expected number of trainpaths (peak) expected mix of trafficand speed (peak) infrastructure qualityneed journey times as short as possible translation of all short andlong-term market-induceddemands to reach optimised load

requested number of trainpaths requested mix of trafficand speed existing conditions of infrastructure time supplements for expected disruptions time supplements for maintenance connecting services in stations requests out of regularinterval timetables(system times, trainstops, ...)

actual number of trains actual mix of traffic and speed actual conditions of infrastructure delays caused by operational disruptions  delays caused by trackworks delays caused by missedconnections additional capacity by time supplements notneeded

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4 Proposal of Train Path Classification (1)• Precondition for capacity utilizing

in the most effective way. • Different accesses in EU countries.• Possible solution:

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4 Proposal of Train Path Classification (2)Optimal Train Path• depended on railway line,• technical and operational possibilities of the line are

used in the most effective way,• more variants of optimal paths – kinds of paths have

to be strictly defined in accordance to type of train(e.g. EC, R, Os, PN, Mn).

• it is also able to help to reducing of time schedule heterogeneity,

• operational priority will also be defined by kind of optimal train path.

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4 Proposal of Train Path Classification (3)Money Evaluation of Train Paths• it is not possible to have all trains with the

same parameters (on the level defined by optimal path),

• the differences will be regarded by system of penalties and discounts– better characteristics than in optimal path are

required: discount, – worse characteristics than in optimal path are

required: penalty.

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4 Proposal of Train Path Classification (4)

Money Evaluation of Operational Train Priority• possibility to „buy“ better operational priority than

it is defined by surcharge for path (e.g. „Os“ can overtake „R“ in the case of delay),

• on the other hand lower priority can be also required with discount on train path price.

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5 Modelling of Optimal Train Paths

Definition of Optimal Paths• task of railway infrastructure manager,• no own rolling stock for operational “tests“,• simulation model• Validated model is based on technical data of

line and rolling stock only “independent tool“ for optimal path definition,

• reference tool for solving of struggles.

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6 Basic Preconditions for Modelling

Data Base • transport infrastructure (data basis of RIM), • rolling stock (is able to be provided by carriers), • defined and validated rules for modelling.

• Possibility of stepwise implementation due to time and work demands by fulfilling of databases.

• Data interoperability is also able to be helpful.

• Software support: e.g. OpenTrack, Railsys etc.

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Conclusion

• New problems are occurring due to free market,• railway infrastructure managers have to be

prepared.

• Capacity utilizing effects,• priorities of train paths, • pricing of paths.

• Proposal of methodology for solution using models are given in this paper.

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Thank you for your attention

Ing. Josef Bulíček, Ph.D. Ing. Lukáš FialaUniversity of Pardubice, Jan Perner Transport FacultyStudentská 95, CZ 53210 PardubicePhone +420466036202E-mail: josef.bulicek@upce.cz

The paper has been elaborated by the support of the institutional intent MŠM 0021627505 “Theory of Transport Systems” of the Ministry of Education, Youth and Sports of the Czech Republic and also by support of Students´ Grant Competition SGDFJ01/2011 of the University of Pardubice.