As semi-autonomous and autonomous cars become the norm, I would adore to see obtaining a drivers license ratchet up in difficulty in order to remove dangerous human drivers from the road.
I think it would be far more effective to make it easier to lose your license than it would be to make getting the license more challenging.
The absolute most dangerous drivers I see on the road aren't bad drivers in the sense that they're unskilled at controlling their car. I can't weave between cars at 120 mph or cross three lanes of traffic to make an exit I didn't see until the last second without killing myself, but I routinely see people do that. Sure they don't care about driving safely and/or following the law, but they're probably sane enough to pull it together for a brief driving test.
The other big category of dangerous drivers is drunk/distracted (texting) drivers. Again, most of the people engaging in these behaviors are probably smart enough not to do them during a driving test.
So I think ~level 5 self driving cars becoming common + a modification to prevent people using their cars just like we install breathalyzers for habitual DUI drivers is needed before revoking people’s licenses is really a meaningful punishment.
Thus for many it’s a symbolic gesture until the next time something happens which is little different than simply doing nothing until the next incident like say 3 strike laws.
DC recently banned "right on red" but it is routinely ignored and the penalty is apparently a $100 fine. If the penalty was loss of license (maybe not on first offense) I think there's a lot of people ignoring the current rule that would not be willing to ignore the possibility of losing their license.
At least with Arizona, it's the whole state so most drivers won't have the habit.
Of course, if DC just wants to take in a lot of easy $100 tickets, this is exactly the way to do it.