and i've almost been hit, had to swerve, multiple times because people do not understand.  I've had people stop in the roundabout to let me in.  I've had people drive right in front of me, causing me to stop fast.  I've almost been t-boned a couple of times because people assume that I (in the roundabout) would stop and yield to them to enter the roundabout.  Its crazy.  I would wager at least 50% of drivers around here do not know how to properly drive in one.