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  • Railway Interlocking Process: A Formal Method for Documenting and Evaluating Railway Junction Signalling and Interlocking

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    Mocki_2015_02Thesis.pdf (3.521Mb)
    Author(s)
    Mocki, Jacek S.
    Primary Supervisor
    Vlacic, Ljubo
    Year published
    2015
    Metadata
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    Abstract
    Railway junctions have been signalled in many different ways using various railway interlocking and signalling technologies. Implementations of those technologies are not identical and are customised for every railway junction. It is therefore very difficult to consistently compare various signalling and interlocking technologies using currently available methods. That creates an enormous task for transport and/or signalling planners to propose the technology that meets the operational conditions on a specific railway junction. This thesis enhances the signalling and interlocking planning process by developing a formal method ...
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    Railway junctions have been signalled in many different ways using various railway interlocking and signalling technologies. Implementations of those technologies are not identical and are customised for every railway junction. It is therefore very difficult to consistently compare various signalling and interlocking technologies using currently available methods. That creates an enormous task for transport and/or signalling planners to propose the technology that meets the operational conditions on a specific railway junction. This thesis enhances the signalling and interlocking planning process by developing a formal method for documenting and evaluating railway junction signalling and interlocking. More precisely, it makes the following contributions: • it develops a structured method to enable railway transport planners to evident a specific railway junction arrangement and, in response to it, determine and describe a corresponding signalling and interlocking algorithm. This includes characterisation of: o manual interlocking algorithm o mechanical interlocking algorithm o electrically powered interlocking algorithm. • it develops an analytical model to calculate the railway junction’s interlocking and signalling requirements determined by the track arrangement installed, such as: o minimum travel distance o maximum velocity o minimum train travel time in the track arrangement. • it defines performance measures relevant in the railway interlocking evaluation process, such as interlocking processing time, signalling system cost, interlocking functionality, signalling system availability and reliability. These operational performance measures allow consistent comparison and evaluation of the interlocking on a railway junction.
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    Thesis Type
    Thesis (PhD Doctorate)
    Degree Program
    Doctor of Philosophy (PhD)
    School
    Griffith School of Engineering
    DOI
    https://doi.org/10.25904/1912/3702
    Copyright Statement
    The author owns the copyright in this thesis, unless stated otherwise.
    Item Access Status
    Public
    Subject
    Railway junctions
    Signalling technologies
    Railway transport planning
    Interlocking algorithm
    Publication URI
    http://hdl.handle.net/10072/365457
    Collection
    • Theses - Higher Degree by Research

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