Check out the traffic flow state in Belgium where measured (15min window). I went ahead on the concept and built a real one, while building a mobile HTML5 application. You can see the page full size here. Click the house , bottom right to zoom to the max extent of the traffic layer.
One of the things MySQL forced me into is looking for serious alternatives. Finding MariaDB was an amazing relief. But it’s still not all cake and cookies yet. I experiment a lot with OpenStreetMaps lately, a great project everyone of all makes should look into seeing what it can do for you and [...]