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http://dx.doi.org/10.7470/jkst.2018.36.1.023

A Study on the Effects of Urban Public Transportation Retrofitting for Sustainability  

KIM, Seunghyun (Department of Transportation Systems Engineering, University of Seoul)
NA, Sungyoung (Department of Transportation Systems Engineering, University of Seoul)
KIM, Jooyoung (Institute of Urban Sciences Integrated Urban Research Center, University of Seoul)
LEE, Seungjae (Department of Transportation Systems Engineering, University of Seoul)
Publication Information
Journal of Korean Society of Transportation / v.36, no.1, 2018 , pp. 23-37 More about this Journal
Abstract
In recent years, it is very difficult to construct and expand new infrastructures in a city center because of long-term low growth and lack of space due to urban overcrowding. So, there is a need to study a variety of Retrofitting techniques and urban applications that can lead to sustainable development while efficiently utilizing existing facilities. 'Retrofit' means a sustainable urban retrofitting as a directed alteration of the structures, formations and systems of existing facilities to improve energy, water and waste efficiencies. In this study, we applied a hierarchical network design technique that can reflect the structural hierarchy of a city to study how to retrofit public transportation routes in Seoul. The hierarchical network design means dividing the hierarchy according to the functions of hubs and connecting different hierarchies to form a hierarchical network. As a result of comparing the application results of various retrofitting scenarios of public transport, the differences of daily PKT and PHT by about 2.6~3.2% less than before the improvement address that the convenience of passengers is increased. Therefore, it is expected that if the route planning is established according to the proposed method, it will increase the number of passengers and the operational efficiency by the improved convenience of public transit passengers.
Keywords
back-born network; hierarchical network design; public transportation; retrofitting; smart card data; sustainability;
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