Comment by dwd

The rule in Australia for roundabouts is that you give way to anyone already on a roundabout.

From an advanced driving course I got to do years ago (for free), I learnt that the pedestrian island counts as part of the roundabout, so a pedestrian crossing or on the island should be given way to finish crossing when entering the roundabout [1].

Doesn't always happen in reality.

There is also this idea in Australia that you always give right of way to cars entering on your right (left for US) which is not an actual rule; as in if you are waiting at the line you count as being on the roundabout.

Unfortunately, you will often see cars on the major road blast through a small roundabout with no regard to anyone waiting to enter from the lesser road, making entering the roundabout from that side a stop rather than an equal give way.

[1] Edited for clarity