My concern is that most of these accidents that go in the media are caused by the elderly people who do not NEED to drive. Accident rates by older people in rural Japan, where a car is essential for travel, are very low.
Some of the older Japanese are much more responsible. My host father is going to stop driving when he is 80, in a couple of months. He says it is best to do that before an accident.
In some Asian countries (particularly those with one party rule), the response would have been a ban on elderly drivers. At least there is more restraint here, when it comes to solving this problem.