While the absolute number of traffic accidents in Japan has declined, the proportion of accidents caused by elderly drivers (65 years and older) has increased. In 2010, Japanese seniors caused 106,311 traffic accidents. This represents an increase of 1.4% compared to the year before. Moreover, the number of reports of unpredictable and erratic driving by senior drivers is increasing.

In Japan, there is an obligation for new drivers to display their status as beginners. The first twelve months after obtaining the driving license a sticker has to be attached to the vehicle.

Similarly, there is a sticker for senior drivers. In February 2011, the orange and yellow colored drop shaped sign for senior drivers has been changed to a four colored and four-leaved one. Currently, both versions are in use. Unlike for beginners there is no requirement for senior drivers to place the sign on the vehicle.

In Japan, this form of marking has proven to be extremely effective in terms of increasing traffic safety. Intuitively other drivers use more caution, expect unpredictable maneuvers and keep a larger distance. It is undisputed that with age, both the physical performance, as well as the responsiveness decrease. In addition, it happens (not only) to senior drivers to overestimate their driving abilities.

An obligation for senior drivers to attach a sticker stating their status could lead to an increase in road safety. This applies especially to aging societies with an increasing percentage of senior drivers.