Statistics show that senior citizens who are 75 years and older that drive have an extremely high percentage of fatal car accidents during the daytime hours alone, not including night time hours. Some of the warning signs of unsafe senior driving is abrupt lane changes, failing to use the turning signal, keeping on the signal without changing lanes, and drifting into other lanes. The National Highway Transportation Administration estimated more than 28 million drivers in the U.S. are 65 and older. Researchers at Johns Hopkins School of Medicine have found that senior citizens who stay behind the wheel are less likely to enter nursing homes or assisted living centers than those who have never driven or who have given up driving.

Some of the possible solutions are:
For Senior citizens who do not want to lose their privilege of driving should consider taking driving courses to sharpen their driving skills. I believe mandatory testing should be required. Screening to identify age-related declines in seniors should be a part of the regular process of license renewal.
DMV (Department of Motor Vehicles) and insurance company records can help monitor the high-risk older drivers.
California has mandatory re-testing requirements for anyone involved in a fatal crash, or three or more crashes in one year. They also require drivers over 70 to re-test if they are involved in two or more crashes in one year. Taking collision preventive courses will also allow seniors to learn how to reduce the chances of being involved in an accident by following the traffic rules and avoid getting traffic tickets. Updating their knowledge of the rules, of the road, will enhance their driving skills.