A rolling horizon optimisation model for consolidated hump yard operational planning

Raut, Sumit; Sinha, Sudhir K.; Khadilkar, Harshad; Salsingikar, Shripad

doi:10.1016/j.jrtpm.2018.09.002

Cited by 13 publications

(7 citation statements)

References 10 publications

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“…Note on the RAS competition yard on a realistic case: A realistic case study was proposed at the problem solving competition organised by the RAS of the Institute for Operations Research and Management Science [25], which was used in refs. [26], [24], and [27]. The instances are composed of 702 inbound trains with a total of 52,246 cars, over a period of 42 days.…”

Section: Case Studiesmentioning

confidence: 99%

“…Another approach is advocated by ref. [27], who first solve a rolling horizon mixed integer linear program (MILP) representing a high‐level description of the problem, where some microscopic objects like tracks or cars are aggregated into larger objects. Using the solution obtained from such an aggregated model, a microscopic detailed solution is obtained using a heuristic algorithm, which is competitive with the two previous works.…”

Section: Roll‐in Sequence and Classification Problemsmentioning

confidence: 99%

See 1 more Smart Citation

Train management in freight shunting yards: Formalisation and literature review

Deleplanque¹,

Hosteins

Pellegrini

et al. 2022

IET Intelligent Trans Sys

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This paper treats theoretical and practical aspects of train management in freight shunting yards. It is a literature survey extending the previous ones and presenting the new important papers published in the last decade. The operations realised in such yards are formalised by modelling them in unified modelling language diagrams and the algorithms implemented to solve the optimisation problems of operations management for the different types of freight shunting yards and for the existing models are presented. The details on real yards that can be found in the literature are also reported, to allow the reader understanding what case studies can be actually tackled with the existing methods.

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Section: Case Studiesmentioning

confidence: 99%

Section: Roll‐in Sequence and Classification Problemsmentioning

confidence: 99%

Train management in freight shunting yards: Formalisation and literature review

Deleplanque¹,

Hosteins

Pellegrini

et al. 2022

IET Intelligent Trans Sys

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“…Various techniques have been proposed to optimize different classification yard processes. [35][36][37][38][39][40] Recent papers optimize yards in the structured European operating context [41][42][43][44][45][46] with shorter blocks and trains, and more frequent train departures, compared to North American classification yard operations with longer blocks and trains, and once-daily departures for each block. Novel methods of sorting railcars have also been researched to make more effective use of available classification tracks.…”

Section: Previous Researchmentioning

confidence: 99%

Influence of traffic complexity on railway gravity hump classification yard performance and capacity

Dick

2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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An optimal freight train plan requires practitioners to find a balance between mainline and yard efficiencies by adjusting the complexity of the yard operation and evaluating trade-offs between the throughput volume, number of blocks and number of trains handled at a given classification (marshalling) yard. To increase knowledge of these trade-offs, YardSYM is used to model the Belt Railway Company of Chicago (BRC) Clearing Yard, a major gravity hump classification yard that processes approximately 3000 railcars per day. The experimental design specifies traffic patterns of varying complexity designed to determine the fundamental relationship between yard throughput volume, the total number of blocks assembled in the yard, and the level of service. Simulation results indicate that yard performance decreases as railcar volume increases and as the number of blocks increases. The simulation results also demonstrate the challenge of two diametrically opposed objectives for yard operators: maximizing railcar connections to outbound trains while departing outbound trains on schedule. Improved knowledge of these relationships can be implemented to advance network, traffic assignment, and blocking models, and allow practitioners to make more informed hump yard operating decisions that improve the efficiency of carload traffic and manifest train operations.

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“…Based on constraints such as the traffic diagram and marshalling yard capacity, Raut et al. [6], Shi and Zhou [7] and Jaehn et al. [8] established mixed integer programming models for the technical operation process of wagons, aiming to minimize the waiting time of wagons in the marshalling yard.…”

Section: Introductionmentioning

confidence: 99%

“…Based on constraints such as the traffic diagram and marshalling yard capacity, Raut et al [6], Shi and Zhou [7] and Jaehn et al [8] established mixed integer programming models for the technical operation process of wagons, aiming to minimize the waiting time of wagons in the marshalling yard. But these programming models took the accumulation process as a sub-part of the technical operation process of wagons, and did not conduct detailed analysis of the wagon accumulation process.…”

Section: Introductionmentioning

confidence: 99%

The accumulation cost of relaxed fixed time accumulation mode

Deng

Jing

et al. 2021

IET Intelligent Trans Sys

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Studying the wagon accumulation process and the laws of accumulation cost is of great significance for determining the suitable conditions of wagon accumulation and shortening the accumulation time. Here, the process of relaxed fixed time accumulation is first taken as a stochastic service system, and derives the theoretical formula for the accumulation cost. Then based on actual data of wagon flows, a simulation model is built to analyse the influence of parameters in the theoretical formula such as the coordination of the traffic diagram and the accumulation process, the sizes and intervals of the arriving wagon groups and the minimum number of wagons. Finally, through comparing with the accumulation cost of fixed train length accumulation mode and considering the benefit of changing the minimum number of wagons in train sets, the optimal minimum number of wagons in the relaxed fixed time accumulation mode under different wagon flow intensities is determined.

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A rolling horizon optimisation model for consolidated hump yard operational planning

Cited by 13 publications

References 10 publications

Train management in freight shunting yards: Formalisation and literature review

Train management in freight shunting yards: Formalisation and literature review

Influence of traffic complexity on railway gravity hump classification yard performance and capacity

The accumulation cost of relaxed fixed time accumulation mode

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