:rant: they are taking the p!ss !
quite often there are two people manning these, if a bike goes past at speed then the officer facing the opposite direction to the camera will note the registration !
this is what i have read on other forums
revenue, revenue, revenue, revenue, revenue, revenue, :rant:
as jim royle would say " safety - my arse !"
ps. i would welcome this sort of behaviour outside schools and such like but on quiet open roads - bull