Techniques for absolute capacity determination in railways

Burdett, Robert L.; Kozan, Erhan

doi:10.1016/j.trb.2005.09.004

Cited by 112 publications

(69 citation statements)

References 11 publications

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“…Ghoseiri et al [48] introduced a multi-objective train scheduling model of passenger trains along single and multiple tracks of rail network, based on minimizing the fuel consumption cost as well as minimizing the total passenger time of trains. Burdett and Kozan [49] developed analytical techniques and models in 2006 to estimate the theoretical capacity of a corridor based on several criteria, such as mixed traffic, directional operation pattern, crossings and intermediate signals along the track, length of the trains, and dwell time of trains at sidings or stations. Wendler [50] used queuing theory and the semi-Markov chains in 2007 to provide a technique of predicting the waiting times of trains based on the arrival times, minimum headway of trains, and the theory of blockings.…”

Section: Studies With Analytical Approachmentioning

confidence: 99%

Railroad capacity tools and methodologies in the U.S. and Europe

Pouryousef

Lautala

White³

2015

J. Mod. Transport.

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A growing demand for passenger and freight transportation, combined with limited capital to expand the United States (U.S.) rail infrastructure, is creating pressure for a more efficient use of the current line capacity. This is further exacerbated by the fact that most passenger rail services operate on corridors that are shared with freight traffic. A capacity analysis is one alternative to address the situation and there are various approaches, tools, and methodologies available for application. As the U.S. continues to develop higher speed passenger services with similar characteristics to those in European shared-use lines, understanding the common methods and tools used on both continents grows in relevance. There has not as yet been a detailed investigation as to how each continent approaches capacity analysis, and whether any benefits could be gained from cross-pollination. This paper utilizes more than 50 past capacity studies from the U.S. and Europe to describe the different railroad capacity definitions and approaches, and then categorizes them, based on each approach. The capacity methods are commonly divided into analytical and simulation methods, but this paper also introduces a third, ''combined simulationanalytical'' category. The paper concludes that European rail studies are more unified in terms of capacity, concepts, and techniques, while the U.S. studies represent a greater variation in methods, tools, and objectives. The majority of studies on both continents use either simulation or a combined simulation-analytical approach. However, due to the significant differences between operating philosophy and network characteristics of these two rail systems, European studies tend to use timetable-based simulation tools as opposed to the non-timetable-based tools commonly used in the U.S. rail networks. It was also found that validation of studies against actual operations was not typically completed or was limited to comparisons with a base model.

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Section: Studies With Analytical Approachmentioning

confidence: 99%

Railroad capacity tools and methodologies in the U.S. and Europe

Pouryousef

Lautala

White³

2015

J. Mod. Transport.

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“…The purpose of this paper is to help planners in Iran to determine absolute capacity of current and future railway infrastructure, and to assist expansion activities. The primary aim of this paper is also to analyze the application and expansion of the Burdett and Kozan (2006) absolute capacity determination model in the context of RAI railway network. The secondary objective is to perform a sensitivity analysis of different elements and parametric values of the model with an open mind to possible extensions and modifications.…”

Section: Background Informationmentioning

confidence: 99%

“…There is an abundance of research on capacity determination involving networks of various types. Examples include De Kort et al (2003), Goverde et al (2013), Landex (2009), Mussone et al (2013), Burdett, Kozan (2004Kozan ( , 2006Kozan ( , 2014, Bevrani et al (2015), Ferguson (2014). The integration, coordination, and planning of the different key components is typically concentrated upon.…”

Section: Literature Reviewmentioning

confidence: 99%

A Case Study of the Iranian National Railway and Its Absolute Capacity Expansion Using Analytical Models

2015

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Abstract. Identifying railway capacity is an important task that can identify 'in principal' whether the network can handle an intended traffic flow, and whether there is any free capacity left for additional train services. Capacity determination techniques can also be used to identify how best to improve an existing network, and at least cost. In this article, an optimization approach has been applied to a case study of the Iran national railway, in order to identify its current capacity and to optimally expand it given a variety of technical conditions. This railway is very important in Iran and will be upgraded extensively in the coming years. Hence, the conclusions in this article may help in that endeavor. A sensitivity analysis is recommended to evaluate a wider range of possible scenarios. Hence, more useful lower and upper bounds can be provided for the performance of the system.

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“…Transport specialists suggest overcoming these transportation problems in the city by constructing the tracks of electric rail transport of much greater throughput (capacity): tram rails, underground lines [1,3] or trains [8]. It is expected that due to smaller rolling resistance these means of transport would produce a great energy saving effect.…”

Section: Introductionmentioning

confidence: 99%

Complex Evaluation of Electric Rail Transport Implementation in Vilnius City

Бурейка¹,

Steišūnas²

2016

Transport Problems

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Summary.The article analyses the current problems of Vilnius city public transportation. The possible solutions (options) and the technical means to improve the attractiveness of public transportation and accessibility are considered. Two main alternatives of means of electric transport (underground and tram) have been singled out for Vilnius city. The suitability of these rail transport means have been substantiated. The nature and density of the work and residence places (areas) of Vilnius city residents have been analysed. The scheme of tram and underground lines projected in Vilnius city are evaluated, which have been composed according to the current and forecasted flows of passengers, the nature of their changes and critical points. The technical economic indicators of the tram routes and underground lines in Vilnius city are analysed: average driving speed, average distance between the stations, the duration of the trip, the capacity of a single means of transport, the costs of line support and the size of investment. The accident rate of urban rail transportation is estimated. Comparative criteria of tram and underground lines are selected. The effectiveness of both rail means of transport in Vilnius city are compared according to three multi-criteria evaluation methods: the sum of ratings, simple additive weighting and geometrical means. The final conclusions and recommendations are provided. КОМПЛЕКСНАЯ ОЦЕНКА ВНЕДРЕНИЯ ЭЛЕКТРИЧЕСКОГО РЕЛЬСОВОГО ТРАНСПОРТА В ГОРОДЕ ВИЛЬНЮСАннотация. В статье анализируются актуальные проблемы общественного транспорта города Вильнюс. Рассматриваются возможные варианты их решения и технический потенциал повышения привлекательности и доступности общественного транспорта. Для Вильнюса выделены две основные альтернативы электрических транспортных средств (метро и трамвай) и обоснована пригодность этих рельсовых транспортных средств. Проанализирована локализация районов, плотность мест проживания и работы жителей города Вильнюса. Оценка схемы проектируемых в Вильнюсе трамвайных путей и линий метрополитена выполнена с учетом текущих и прогнозируемых потоков пассажиров, характера их изменений и критических точек. Анализируются технико-экономические показатели трамвайных маршрутов и линий метрополитена в городе Вильнюс: средняя скорость движения, среднее расстояние между станциями, продолжительность поездки, вместимость одного транспортного средства, расходы на содержание линий и величина инвестиций. Анализируется число инцидентов в городском рельсовом транспорте. Подбираются критерии для сравнения применяемости 50 G. Bureika, S. Steišūnas трамвайного транспорта и метрополитена. Эффективность обоих средств рельсового транспорта в городе Вильнюс сравнивается тремя методами многокритериальной оценки: методом суммы рейтингов, методом простого аддитивного взвешивания и методом средних геометрических значений. Представлены окончательные выводы и предложения.

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Techniques for absolute capacity determination in railways

Cited by 112 publications

References 11 publications

Railroad capacity tools and methodologies in the U.S. and Europe

Railroad capacity tools and methodologies in the U.S. and Europe

A Case Study of the Iranian National Railway and Its Absolute Capacity Expansion Using Analytical Models

Complex Evaluation of Electric Rail Transport Implementation in Vilnius City

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