A Simulation Tool To Support Signalling And
Train Control Design For High-capacity Railways
Author(s)
D. C. Gill & A. Grostate
Abstract
New-generation signalling and train control systems, such as ETCS-level 2,
distance-to-go ATC and many CBTC implementations, effectively transfer
responsibility for safe train separations from track-based ‘fixed block’ sections to
dynamic on-board calculations using data from speed sensors. Signalled line
capacity, in terms of trains per hour, is thereby directly dependent on true train
speed, rather than a single worst-case speed curve applied as the basis of
previous generation fixed-block designs. The scheme design process therefore
widens in scope to permit the optimisation of line capacity by the strategic
adjustment of target driving speeds and, where applicable, the optimisation of
train-detection equipment in relation to geographical headway criticality. To
predict with accuracy the performance supported by a given scheme design, a
validated simulation tool is applied that models the movement of trains under
both steady-state and perturbed service conditions. The paper describes the
development of such a tool and, as a case example, focuses on its application in
supporting scheme-design for the re-signalling by Invensys Rail of the London
Underground Victoria Line, under a contract with Bombardier Transportation.
This replaces a pioneering 1960s fixed-block ATC system with a radio-based
ATC system that applies dynamic distance-to-go calculations.
Keywords: advanced train control, train simulation, railway signalling, ETCS,
CBTC, ATC, DTG-R, ATP, ATO.
Keywords
advanced train control, train simulation, railway signalling, ETCS,
CBTC, ATC, DTG-R, ATP, ATO
Related Book
Other papers in this volume
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