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
Content of Presentation
1.
2.
3.
4.
5.
6.
Problem definition
Operational side of problem
Train paths demand and capacity
Proposal of train paths classification
Modelling of train paths
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
expected number of train
paths (peak)
Timetable
planning
requested number of train
paths
expected mix of traffic
and speed (peak)
requested mix of traffic
and speed
infrastructure quality
need
existing conditions
of infrastructure
journey times as short
as possible
time supplements
for expected disruptions
translation of all short and
long-term market-induced
demands to reach
optimised load
time supplements
for maintenance
connecting services
in stations
requests out of regular
interval timetables
(system times, train
stops, ...)
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Operations and control
actual number of trains
actual mix of traffic
and speed
actual conditions
of infrastructure
delays caused
by operational disruptions
delays caused by track
works
delays caused by missed
connections
additional capacity
by time supplements not
needed
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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 Fiala
University of Pardubice, Jan Perner Transport Faculty
Studentská 95, CZ 53210 Pardubice
Phone +420466036202
E-mail: [email protected]
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.
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