1. Assistant Professor, Dept. of Industrial Management and Engineering, Myongji Univ., 116 Myongji-ro, Cheoin-gu, Yongin-si, Gyeonggi-do 17058, South Korea. ORCID: .
2. Principle Researcher, Transport Systems Research Team, Korea Railroad Research Institute, 176 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16105, South Korea. ORCID: .
3. Senior Researcher, Optimization and Analytics Office, SK Innovation, 26 Jongno, Jongno-gu, Seoul 03188, South Korea.
4. Professor, Dept. of Railroad Management and Logistics, Korea National Univ. of Transportation, 176 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16106, South Korea (corresponding author). ORCID: .