Same here, the main road up to Londonderry has camera vans on it almost 24/7, and always placed at sections where there are dedicated overtaking lanes.

So motorists get stuck behind Asda and Tesco lorries obeying the 40mph limit which then causes long tailbacks, so people try and overtake at the safe overtaking lanes. Only to be greeted by some dumb fuck in a camera van waiting on them.

So instead motorists are forced to make dodgy overtaking manoeuvres on single carriageway where there are no cameras.