lol a little extreme dont you think?
Airbags are a safety device, and work.
Let be sensible about this here. Speed cameras which continue to catch people speeding.... is that working then?? I think we miss the point here.. The idea of them is to slow the average on the road down and penalise those who refuse to comply.
But a camera that continuously gets 1000 people a week is NOT working. Hence the suggestion fo SPEC's.

Originally there was a threshold for installation of cameras but that seems to have fallen away, leaving some profitable cameras in place.