The legal side of the road to drive on in South Africa is the left. Well, except for dirt roads. On dirt roads you just drive where ever you think will do the least damage to your car. If another car comes, you move back over to the left.
The other day I was driving slowly down a particularly rocky road and I thought the far right side was the best place to drive. As I was nearing the top of a small hill, another car comes over from the other side, also driving on his far right side. He just flashed his lights at me, as if to say, “Don’t worry about moving back over to the left.” So we passed driving on the right and went about our days.