[tomjen3]

It used to be that Danish police would tell the radio stations where they would conduct station people with radar guns to check for people driving too fast.

Since the goal was to prevent speeding, it didn't matter if they slowed down because they wanted to avoid a ticket so long as they slowed down.

These days they don't do so anymore because it is a nice way to pad government coffers, but it would be nice to build such an app.

[bricestacey]

I believe they still do this in the United States. At least, they did last I lived in north Florida.