Still, the US is not the only place with very mixed standards for driving tests. I once heard that the easiest way to get a Dutch driving license was on the Caribbean island of Saba, where you'd get your license if you could drive around the central square without causing an accident. I knew someone who got his license there, and he didn't dare to drive a car in Netherland. Fortunately he had a Dutch motorbike license.
1: http://www.hillstax.org/services/services-driver-licenses.as...
IMO you should have to re-take the test every 5 years starting at 50... and maybe ever year starting from 70 or 75.
The written portion of the test consisted of sign identification and a few very easy multiple choice questions.
I did this when I was 15. That as almost 20 years ago. Have never, and will never, need to do anything else.