Abstract
This study clarifies adaptation of previous driver's occupant injury prediction model to front seat and rear seat passengers using Japanese accident data. In results, the driver's injury prediction model can estimate passengers in front seat and rear seat. However, the accuracy for predicted injuries of front seat and rear seat passengers is somewhat worse than that of drivers in higher delta-V. Furthermore, some outlier accident cases indicate that improper seat belt usage increases injury risks for both passenger seats, especially for short-stature female passengers. It is considered that there are various conditions of seating position and seat belt usage for passengers; therefore, it causes dispersion of their injury risks.