When is speeding not speeding?

In North Wales, apparently.

3000 drivers have had speeding tickets cancelled because of a problem with the application from the council to make the road a 30MPH zone. What you might call a cock up, or a technicality, if you're being nice.

But wait. All the road signs said it was a 30 zone, the drivers knew it was a 30 zone and yet they were speeding. They got snapped by a mobile van, but then had their tickets scrapped because of the application cock up.

So, they were speeding. They knew that the limit was 30, by virtue of the big, brand new 30MPH signs, yet they still ignored them. They didn't know at the time that the council cocked up an application.

So, are they still guilty? I'd say so.