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Benefits of rerouting railways to tunnels in urban areas: a case study of the Yongsan line in Seoul

Author

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  • Justin S. Chang
  • Sangjin Han
  • Dongjae Jung
  • Daejin Kim

Abstract

As ground transport infrastructure causes diverse externalities such as noise and urban separation, the rerouting of such facilities to tunnels is one practical option to resolve the problem of social costs. Although such a mega-project is normally associated with huge budgets, this solution can also generate useful benefits for society. This paper explores these benefits using the Yongsan line in Seoul, Korea, as a case study. Four representative values are considered. Noise reduction benefits are represented by two cost components: annoyance and health risk. Railway crossings are evaluated by operating and accident costs. Excess travel time for pedestrians is used as the key index to measure urban separation. Finally, the value of the landscape is quantified based on an anthropocentric method in the form of the transfer of benefits. In the calculation of these benefits, the local parameters of Korea are applied for realistic estimates while a universal methodology for each component is adopted for securing theoretical validities. There are also some other components that are not included in this appraisal such as congestion and scarcity costs, air pollution, climate change, and land reuse. These excluded elements are either not directly related to the purpose of this study or are related to the problem of double counting, which should be avoided. A sensitivity analysis about the catchment area shows drastic changes in benefit estimates, which signifies the need for careful interpretation of the appraisal. The concluding section suggests a direction for future studies, including a cost-benefit analysis and an ex-post investigation.

Suggested Citation

  • Justin S. Chang & Sangjin Han & Dongjae Jung & Daejin Kim, 2014. "Benefits of rerouting railways to tunnels in urban areas: a case study of the Yongsan line in Seoul," International Journal of Urban Sciences, Taylor & Francis Journals, vol. 18(3), pages 404-415, November.
  • Handle: RePEc:taf:rjusxx:v:18:y:2014:i:3:p:404-415
    DOI: 10.1080/12265934.2014.934270
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    Citations

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    Cited by:

    1. Joep Tijm & Thomas Michielsen & Peter Zwaneveld & Raoul van Maarseveen, 2018. "How large are road traffic externalities in the city? The highway tunneling in Maastricht, the Netherlands," CPB Discussion Paper 379.rdf, CPB Netherlands Bureau for Economic Policy Analysis.
    2. Joep Tijm & Thomas Michielsen & Raoul van Maarseveen & Peter Zwaneveld, 2018. "How Large are Road Traffic Externalities in the City? The Highway Tunneling in Maastricht, the Netherlands," CESifo Working Paper Series 7089, CESifo.
    3. Joep Tijm & Thomas Michielsen & Peter Zwaneveld & Raoul van Maarseveen, 2018. "How large are road traffic externalities in the city? The highway tunneling in Maastricht, the Netherlands," CPB Discussion Paper 379, CPB Netherlands Bureau for Economic Policy Analysis.
    4. Anciaes, Paulo & Jones, Peter, 2020. "Transport policy for liveability – Valuing the impacts on movement, place, and society," Transportation Research Part A: Policy and Practice, Elsevier, vol. 132(C), pages 157-173.
    5. Mindell, Jennifer S. & Anciaes, Paulo R. & Dhanani, Ashley & Stockton, Jemima & Jones, Peter & Haklay, Muki & Groce, Nora & Scholes, Shaun & Vaughan, Laura, 2017. "Using triangulation to assess a suite of tools to measure community severance," Journal of Transport Geography, Elsevier, vol. 60(C), pages 119-129.
    6. Tijm, Joep & Michielsen, Thomas O. & van Maarseveen, Raoul & Zwaneveld, Peter, 2019. "How large are the non-travel time effects of urban highway tunneling? Evidence from Maastricht, the Netherlands," Transportation Research Part A: Policy and Practice, Elsevier, vol. 130(C), pages 570-592.

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