Jiho Park(Principal Researcher, Korea Expressway Corporation Research Institute, 208-96, Dongbu-daero 922 Beon-gil, Dongtan-myeon, Hwaseong-si, Gyeonggi-do, South Korea.)
Kiyoung Lee(Research Fellow, Korea Expressway Corporation Research Institute, 208-96, Dongbu-daero 922 Beon-gil, Dongtan-myeon, Hwaseong-si, Gyeonggi-do, South Korea)
Corresponding author
Yong-won Kim(Research Fellow, Korea Expressway Corporation, 77, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do, South Korea.)