...that, really, should result in the revoking of one’s driver’s license?

Obviously, if you get “super drunk” (which is official terminology here in Michigan, BTW), go on a reckless rampage through town, and kill somebody, you can kiss your license goodbye.

But in your opinion, what is the most minor driving sin that one can commit, that (if you were in charge) would immediately result in the suspension or revocation of one’s driving privileges?

Would you keep it as an extreme measure, only to be applied to the very worst of the worst drivers out there? Or would you target drivers who exhibit signs that they lack the fundamental skills required for driving, and make them have to reapply for their license all over again BEFORE they hurt somebody?