Half the people stop in the roundabout, the other half fly right into them without giving right-of-way. Then you have the idiots changing lanes in the roundabouts, and my favorite, people who exit from the inner most lane of the roundabout into the first lane of an exit (when they should be in the outer lane). They have even painted solid lines within parts of the roundabouts, and the first 50 feet of the exits to try and fix these issues, but Thai's still can't figure it out. So there are some smart engineers found in Thailand, I assume they've spent some time overseas, as most Thai's seem oblivious.