About the Authors
- Kwang-Sub Lee
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Roles Conceptualization, Formal analysis, Investigation, Methodology, Software, Visualization, Writing – original draft, Writing – review & editing
* E-mail: leeks33@krri.re.kr
Affiliation Railroad Policy Research Department, Korea Railroad Research Institute, Uiwang-Si, Korea
- Jin Ki Eom
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Roles Data curation, Funding acquisition, Investigation, Project administration, Resources, Supervision, Validation, Writing – original draft
Affiliation Railroad Policy Research Department, Korea Railroad Research Institute, Uiwang-Si, Korea
Competing Interests
NO authors have competing interests.