“…Both global rating agencies and academic researchers have studied the subject of internal ratings (Allison & Tufts, 2015;Bae & Damnjanovic, 2018;Korean Ministry of Land Infrastructure and Transport, 2016;Medina & Marty, 2018;Morgan Stanley, 2014;Nikolića, Jednak, Benković, & Poznanić, 2011;Piney, 2003;Renigier-Biłozor, Wisniewski, Kaklauskas, & Biłozor, 2014;Ribeiro & Ferreira, 2017;Standard & Poor᾽s, 2014). Taking into consideration relevance to this study and concreteness of information, six previous studies are selected: Bank for International Settlements (BIS, 2001); Moody's (Medina & Marty, 2018); Standard & Poor᾽s (2014);Renigier-Biłozor et al (2014); Failure Mode and Effect Analysis (FMEA) (Nikolića et al, 2011); and the Korean infrastructure guidelines (Korean Ministry of Land Infrastructure and Transport, 2016) (see Table 1).…”