Hey Bruno...After all that messing around to get things to rotate, I found a very simple solution...Create a road using a plain in the X direction as per normal size it up etc..Place the Highway eco on it etc..once happy with the result..Rotate the whole plain 90* to face Y and everything stays exactly where it needs to...only one problem, you cant repopulate, otherwise everything faces X again....I'll try your suggestion just to see how it works.

Thanks Bruno..