[Ilikeruby]

I wanted to do something similar however, I could not find the Real time API. Where do you get the data?

[kaffeeringe]

There is a not yet public API. But there's a law in Germany that should make this kind of data available in a central "Mobilithek".

Mobilitätsdatenverordnung (MDV)

And I think there's even something in the EU on the way.