Modelling periodic operations on single track lines: Timetable design and stability evaluation

Coviello, Nicola

doi:10.1016/j.retrec.2015.10.020

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…However, in order to check the stability and behavior of the non-radial DEA model, the sensitivity analysis was conducted for each case study (for results see Table 2). Consequently, the ideal way, which can be related to sensitivity analysis, is therefore to vary some parameters while monitoring the relative movement of efficiency changes [51]. Like, for example, to vary the indicators, that is, UDI and UDO -while observing the results of the influence of TCIS on railway capacity consumption.…”

Section: Results Of Non-radial Dea Model and Sensitivity Analysismentioning

confidence: 99%

“…Based on the proposed assessment of the daily capacity improvements deriving from the application of the ETCS signaling system, [51] compared capacity in terms of maximum number of daily trains, between the base Telephone Block system, the ETCS level 2 scenarios and ETCS level 3 with moving block. Using blocking time model, [52] presented headway of signaling systems and headway between trains that are running under different signaling systems.…”

Section: Consideration Of Influence Of Tcis On Capacity Consumptionmentioning

confidence: 99%

“…In order to apply the non-radial DEA model, one of the most important steps is the selection of inputs and outputs, as well as classification of them as desirable and undesirable. Also, in [51], it was pointed out that the first point in assessing the performance improvements deriving from a better signaling system is to set what values have to be chosen for comparison.…”

Section: Selection Of Case Studies/dmus and Variablesmentioning

confidence: 99%

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Modern Railway Engineering

Hessami¹

2018

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Innovation at Vega Systems. His expertise is in systems assurance, safety, security, sustainability, and knowledge management methodologies and has a background in design and development of critical safety systems. His project managed the safety analysis of the European Rail Traffic Management System's ETCS for the European Commission and led the development of an advanced and systematic safety management system under SAMRail project in support of railway safety directive. He represents the UK on CENELEC & IEC safety systems and hardware and software standards for railway applications and served as a convenor for review of EN50128 software safety and TR50506-1 standards. He is also a member of CENELEC WG26, Railway Cyber Security Standardization. He is a visiting professor at the

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Section: Results Of Non-radial Dea Model and Sensitivity Analysismentioning

confidence: 99%

Section: Consideration Of Influence Of Tcis On Capacity Consumptionmentioning

confidence: 99%

Section: Selection Of Case Studies/dmus and Variablesmentioning

confidence: 99%

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Modern Railway Engineering

Hessami¹

2018

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“…On the one hand, strict periodicity is more attractive for passengers because precise clock-face schedules are easier to remember. On the other, strict periodicity consumes extra capacity and therefore reduces the number of trains that can be operated, especially for single-track lines ( 14 , 15 ). Furthermore, taking advantage of the flexibility possible using this “hybrid cyclicity” has been shown to better serve high-density demand ( 16 ).…”

Section: Strategic Timetabling Algorithm Descriptionmentioning

confidence: 99%

Multiobjective Timetable Development Tool for Railway Strategic Planning in Norway

Coviello¹,

Medeossi²,

Nash

et al. 2022

Transportation Research Record: Journal of the Transportation R

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Strategic planning is critical in helping railways develop optimal programs for improving their business by making service more attractive and efficient. Preparing a strategic plan requires comparing multiple alternatives and options, each requiring time-consuming planning, evaluation, and analysis. To improve this process Jernbanedirektoratet, Norway’s Railway Directorate, began a research project to develop a state-of-the-art railway timetable generation tool that could be integrated into the agency’s existing timetable-planning process. The new tool, called Automatic Timetabler with Multiple Objectives, is designed to transform conceptual passenger and freight service requirements into working timetables, while ensuring robustness and minimizing time losses. It is designed to bridge the gap between less detailed (macroscopic) models used in timetable development and detailed (microscopic) traffic simulation models. More specifically, it is a mesoscopic model, simplifying some infrastructure elements while using more detailed representations of others (e.g., using specific track allocations in stations). In practice, the tool quickly provides planners with many feasible and good timetables using high-level timetable requirement data. This ability is very useful for strategic planning because it enables planners to quickly evaluate alternative timetable concepts. This paper describes the new timetable generator tool, its development, and the results of a case study application.

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“…It is also used to explain the train timetable capacity to absorb the disturbance and there are a few publications about the train timetable stability analysis. Coviello analysed the application of high‐frequency periodic timetables on single track railways and presented the main parameters to evaluate timetable stability [9]. Xavier designed a module to evaluate timetable stability based on delay propagation [10].…”

Section: Literature Reviewmentioning

confidence: 99%