By nationality, Chinese drivers topped the list with 1,697 accidents, followed by Koreans with 1,227 and Brazilians with 1,065. Many accidents involved drivers who obtained Japanese licenses through the conversion of their valid home-country license. Critics argue the conversion process, which involves a true-or-false test and road test, doesn't sufficiently assess applicants' traffic knowledge. The NPA is currently reviewing this system to ensure it meets safety standards.