I think the author is trying to say that half is cycletrack and half is what we'd think of as sharrows. He's not saying 50% of roads have cycling facilities, b

I think the author is trying to say that half is cycletrack and half is what we'd think of as sharrows. He's not saying 50% of roads have cycling facilities, but that of the roads that do have cycling facilities, there's an even split between integrated and separated variants.