If i remember correctly part of the tramway was not overlapped but parallel on the right side. There was probably overlapping somewhere since it was poorly mapped in origin. I'm not suggesting to keep them overlapped but just parallel on the side, since in this case the road is wide and the tramway is totally on the right side (watching along the direction of the one way).
This is usually done to split the tags and make easier the mapping, if you want you can see here in the wiki, under embedded tracks: https://wiki.openstreetmap.org/wiki/Trams.

Have a nice day