Hi Yorkie,
I used to ride in the centre of the lane between the "tracks" until following behind a large truck an unfortunate large kangaroo flipped out from between his rear tyres and hurtled towards me. Luckily, just had enough distance to swerve to avoid a collision. Another time I came down on the road when I hit an oil patch left behind by a leaky vehicle. I tend to ride more towards the centre of the road for better visuals and to be seen by vehicles going both ways.