Not something I'd do as there's a big chance that if a driver is prepared to break the law then your own personal safety may be at risk if such a person is confronted. Sadly, I've seen nasty confrontations of this nature happen.I do see he's well mob-handed in the videos but even then, risky!
I have a policy of just totally ignoring such idiots or smiling and waving pleasantly to them. If they have committed an act the police may be keen to see then I submit the video evidence.
I have a friend who makes their displeasure at any small infringement very clear by shouting and gestures; I worry for their safely given that if a driver is driving dangerously in the first place then they may be dangerous in other ways. Just not worth the risk. That said, I possibly annoy them just as much by me completely ignoring them or smiling pleasantly at them.
