You can usually tell ’em apart from the rest of us. You just have to look.
For example, this morning this driver ahead of me was weaving all over the road, obviously distracted by whatever it was she was looking for in her car.
As we came to a stop at the red light in front of both of us, I noticed her “sign”: a driver’s side rear-view mirror….or what was left of it.
Obviously, another bad call on her part….
You just gotta look for ’em.