The conflict resolution in connected railway junctions
Tsang, C.W. & Ho, T.K. (2003) The conflict resolution in connected railway junctions. In Computational Methods in Engineering and Science : Proceedings of the 9th International Conference EPMESC IX, Taylor & Francis, University of Macau, China.
Purpose of study: Traffic conflicts occur when trains on different routes approach a converging junction in a railway network at the same time. To prevent collisions, a right-of-way assignment is needed to control the order in which the trains should pass the junction. Such control action inevitably requires the braking and/or stopping of trains, which lengthens their travelling times and leads to delays. Train delays cause a loss of punctuality and hence directly affect the quality of service. It is therefore important to minimise the delays by devising a suitable right-of-way assignment.
One of the major difficulties in attaining the optimal right-of-way assignment is that the number of feasible assignments increases dramatically with the number of trains. Connected-junctions further complicate the problem. Exhaustive search for the optimal solution is time-consuming and infeasible for area control (multi-junction). Even with the more intelligent deterministic optimisation method revealed in , the computation demand is still considerable, which hinders real-time control. In practice, as suggested in , the optimality may be traded off by shorter computation time, and heuristic searches provide alternatives for this optimisation problem.
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|Item Type:||Conference Paper|
|Keywords:||Railway transportation, Junction traffic, Conflict resolution, Genetic algorithm|
|Subjects:||Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > APPLIED MATHEMATICS (010200) > Operations Research (010206)|
Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > ARTIFICIAL INTELLIGENCE AND IMAGE PROCESSING (080100) > Expert Systems (080105)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2003 Swets & Zeitlinger|
|Deposited On:||09 Nov 2010 15:47|
|Last Modified:||05 Dec 2011 12:09|
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