Both permanent disability data and trauma registration data in Japan were used in the analyses of more effective countermeasures based on the current nature of casualties in automobile accidents. The new Advanced and Integrated Traffic Accident Database (AITAD) was created based on the following two existing databases:
More detailed analyses regarding the relationships between permanent disabilities or specific injuries and the source of casualties in automobile accidents were performed. The analyses focused particularly on the degree of injuries to the specific human body regions where permanent disabilities occurred, and the degree of permanent disability, as well as details of injuries based on human body regions affected by the accident configurations.