I love Australia's method of determing the ability to drive. Here in the US each state has its own rules. In my state we can renew our license on -line if you are under age 70 unless special considerations apply. After that age we need to go to the DMV and take a successful eye test at each renewal. Generally no driving skills test required. A doctor is required to notify DMV if a person has a valid license but no longer meets driving requirements-age is not an issue.
Renewal time is 6 years . However as needed before the next renewal time one can make the right decision to stop driving , pay attention to family pressure, or sometimes be reported by another person to the DMV of their unreported driving challenges. Sadly many driving challenges are discovered from infractions or accidents. Scary isn't? Mary