Just fixed up a rather large weird complicated intersection.
I was rather frustrated when driving through this intersection when my GPS thought it was ok to turn when it was not.

So, with thanks to nearmap imagery (thanks guys and gals), JOSM, and a bit of a know-how of weird relations (I hope I've got all these right) and access restrictions, it should all be good now :)

The intersection is just north of Sydney, Australia.
osm.org/?lat=-33.829894&lon=151.214222&zoom=18&layers=B000FTF

As usual, let me know if I've got things wrong, or better ways to improve it.