[talk-au] unsealed and 4x4 roads revisited

Folks, following some suggestions off-list I have rewritted the proposed unsealed roads section on http://wiki.openstreetmap.org/wiki/Talk:Australian_Tagging_Guidelines Emphasis has now been placed on the roads people are thinking about rather than the tags used. Makes it a bit more friendly to

[talk-au] traffic lights on dual carriageway intersections

I have been trying to find the accepted practise for mapping traffic lights where dual carriageways interest. There is much discussion on various sites, but most seems to be a bit old, and I'm not convinced I've found what is the latest accepted practise. I checked some intersections in