Roundabouts are the latest aging yuppie craze, to avoid new roadways, and to pretend they are saving our planet and everyone's lives. Generally speaking, roundabouts cannot handle smoothly the traffix=c at a busy intersection that traffic lights or signs can. Yes, you'll have to stop your Prius for awhile, but at least fifteen others aren't stymied by the continual guessing game of when and where to go.
Watching traffic here at our new RB's is quite entertaining. Traffic can be backed up for longer now as people wait to see what a Yield is