In all fairness to the police, you have to say that that is the worst piece of road building I have seen in a long time. What an abortion of a junction that is. What the f*** were the highways thinking when they dreamt up that one!!!!!  
 
  If there was ever a call for a roundabout that is it........... 
 My guess is that the road junction is so bad there that there's a fair few 'incidents' hence the justification for the police to monitor speed in the hope it reduces t-Bones......... 
 Accident waiting to happen if you ask me.