Originally Posted by
solmanic
Just checked the Vic road rules and it's the same as NSW. You just have to check that the "road ahead is clear", and it's safe, and so on. Likewise, South Australia only says the road must be clear ahead on a "single lane road". So unless the requirement for both oncoming lanes to be clear is buried somewhere in the source legislation, I think this one of those tomato-tomato rules. Most people seem to just assume that you need both oncoming lanes to be totally clear.
Oncoming vehicles must not move into the centre oncoming lane if they themselves aren't overtaking. Also, there is no logical reason for an oncoming vehicle to randomly pull into the centre lane if they can clearly see you coming. There is no increased risk of collision over passing an oncoming vehicle on a standard two-way road.