Most drivers have experienced mayhem and confusion at traffic circles as almost everyone thinks it’s their right of way. Many drivers also believe that they are the only ones who know the rules and what to do. Even the timidest drivers become something else the second they enter traffic circles and expect other drivers to wait.
South African drivers are like medicine: keep in a cool, dry place. Too hot and especially too wet and we go strange. A bit of rain and Solid Susan turns into Maniac Megan and Dependable Dan into Clueless Clive.
So when it rains, make sure you can see them and they can see you. A split second of either these not happening can totally ruin your day.