Reference
X. Luan, B. De Schutter, F. Corman, and G. Lodewijks, "Integrating dynamic
signalling commands under fixed-block signalling systems into train dispatching
optimization models,"
Proceedings of the 97th Annual Meeting
of the Transportation Research Board, Washington, DC, 17 pp., Jan. 2018.
Paper 18-01197.
Abstract
In real operations, train dispatching works aim at adjusting the impacted
schedule and reducing negative consequences during disruptions. As one of the
most important components of the railway system, railway signals are used to
guarantee the safety of train service. We study the train dispatching problem
with consideration of railway signalling commands under the fixed-block
signalling system. In such a system, signalling commands dynamically depend on
the movement of the preceding train in the network. We clarify the impact of
the signalling commands on train schedules, which has been so far neglected in
the railway train dispatching literature, and then we innovatively propose a
set of signalling constraints to implement the impact. The determination of the
signal indicators is presented "if-then" constraints, which are further
transformed into linear inequalities by applying two transformation properties.
Activation of the train speed limits that result from the signalling commands
are the core purpose of the signalling constraints, and this is implemented by
using the signal indicators. Moreover, we formulate the Greenwave (GW) policy,
which requires that trains always proceed under green signals, and we further
investigate the impact of the GW policy on the results (delay). In the
numerical experiments, the proposed signalling constraints are employed by a
time-instant optimization model, which is a mixed-integer linear programming
(MILP) model. The experimental results demonstrate the effectiveness of the
proposed signalling constraints and show the impact of the signalling commands
and GW policy on the train dispatching solution.
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BibTeX
@inproceedings{LuaDeS:18-003,
author = {Luan, Xiaojie and De Schutter, Bart and Corman, Francesco and
Lodewijks, Gabriel},
title = {Integrating Dynamic Signalling Commands Under Fixed-Block
Signalling Systems into Train Dispatching Optimization Models},
booktitle = {Proceedings of the 97th Annual Meeting of the Transportation
Research Board},
address = {Washington, DC},
month = jan,
year = {2018},
note = {Paper 18-01197}
}