The Insurance Institute for Highway Safety reports that 19 states restrict the issuance of driver's licenses to folks my age - some by requiring more frequent renewals, some by test requirements, some by both.
Unfortunately, neither Maryland nor Virginia does so.
In the District of Columbia, to get an eight-year renewal after age 70, applicants must get a doctor's statement saying that they are mentally and physically competent to drive.
Eight years is still risky, in my view.
It wouldn't be much of a hardship for me to visit an MVA office every two years or so to get a new license, even if the prospect of a test forced me to study the rulebook again or I had to demonstrate anew my considerable skills at parallel parking.
But that's not required.
The next time an elderly driver speeds the wrong way on a divided highway, drives into a store-front barber shop or runs down pedestrians on a sidewalk, stop and think.
He or she may have years left on that license.
Allnut's piece first appeared in The Washington Post.