I'd never heard of this strange Dutchmen until I read the stuff about Lampard, and this video is the first time I've seen any of his vigilante work, he is definitely an odd character, it's the very concerning way he seems to be sitting there waiting for somebody to do what the Merc driver in the video has just done, and once the Merc driver had made his some what dumb manoeuvre, it would have been safer to let him go right rather than trying to force him back, film the guy breaking the law and report it if he thinks that would help, but behaving like a jumped up wee parking attendant is totally wrong. If I remember rightly the highway code requires everyone to take action to prevent possible accidents, this seems to be trying to force somebody to do something dangerous, and if he'd been in the road to start with the Merc driver would not (I accept I am speculating now, but chances are I'm right) have gone the wrong side of the traffic island, yes what the Merc driver did was wrong, but who hasn't done something technically wrong when they are able to accurately assess the risks. Obvious conclusion is that those who have mentioned that Mr Van-Erp needs help are correct.