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A Rail Network Optimization Model Designed To Model Freight Networks At A Macro Level

Título
A Rail Network Optimization Model Designed To Model Freight Networks At A Macro Level
Tipo
Artigo em Livro de Atas de Conferência Internacional
Ano
2013
Autores
Luís Couto Maia
(Autor)
FEUP
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António Couto
(Autor)
FEUP
Ata de Conferência Internacional
Páginas: 1-16
13th WCTR
Rio Janeiro, Brazil, July, 15 - 18
Classificação Científica
CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil
FOS: Ciências da engenharia e tecnologias > Engenharia civil
Outras Informações
Abstract (EN): The rail freight network optimization model presented in this paper was developed as a support tool for planning and policy decisions involved in the improvement of rail networks on a regional and national level. It is based on a strategic traffic assignment model designed to model macro networks with a high aggregation level, being exclusively designed for freight traffic. The model contemplates road and rail transport modes, and considers two different types of cargo: intermodal cargo, which is generally transported in containers and is easily interchanged between different modes at intermodal terminals; and general cargo, which represents all the remaining cargo. The optimization process is based on a local search heuristic which delivers good solutions in a reasonable computing time, with the quality of each network improvement solution being assessed based on the reduction of the total generalized costs and CO2 emissions. This freight network optimization model is innovative in the fact that it is not limited, allowing for both the improvement of existing links as well as the construction of new ones, and not having a limit on the number or variety of network improvement possibilities. Its adaptability to different conditions is emphasized when the model is applied to a network under two different investment scenarios, by delivering considerably different solutions adapted to the conditions of each scenario. Keywords: network optimization, freight transport, traffic assignment.
Idioma: Inglês
Tipo (Avaliação Docente): Científica
Nº de páginas: 16
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