Integrating Dynamic Signalling Commands Under Fixed-Block Signalling
Systems into Train Dispatching Optimization Models
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.
Downloads
- Corresponding technical report:
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Bibtex entry
@inproceedings{LuaDeS:18-003,
author={X. Luan and B. {D}e Schutter and F. Corman and G. Lodewijks},
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}
}
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