Denmark has always been a very advanced country. They use novel approaches at solving problems. In Copenhagen, like in many other big cities, speeding is a problem. Most countries would put draconian radar controls, Police check points, speed bumps, etc. But not the Danes.....
Here's the most user friendly and novel approach for getting people to slow down:
Due to advertiser pressure, I have removed the video itself. You can find it here (click). Sorry.
This video was obviously not made in the winter ;-)