If I did, I would be making it up as I am not in Austria. So sorry for being in the wrong country. I had thought of some possible objections that I might get but this wasn't one of them!
And yes, not all infrastructure is segregated - it switches around quite a lot. But it's rather misleading to say 'only a quarter to a third' without reference to how much infrastructure this is in the first place, and what you mean by 'infrastructure' anyway. I wouldn't call much of what exists supposedly for cyclists in the UK, 'infrastructure', for example. It definitely seems like a hell of a lot in
Aarhus.