drivers licence here is connected to our age: at 70 you have to take a medical test which will be re-done at least each 5 years or earlier when doctors are expecting something is coming up - say each year.
that could be eye-sight, hearings, hart-failing or what ever you can think of.
Still that ain't guaranteed no accidents : I know of lots of accidents (hart failure) in which YOUNG drivers were involved.
as far as "behaviour" is involved: most accidents here are caused by young drivers : 18-24........