Pretty much. Most of the ones that I've seen here in Seattle are basically small landscaped areas with a curb in the middle of the intersection. Probably not

Pretty much. Most of the ones that I've seen here in Seattle are basically small landscaped areas with a curb in the middle of the intersection. Probably not much more than six feet in diameter or so. (At the one nearest my house the sidewalk corners aren't even rounded any to accomodate them.) These really aren't true roundabouts. But yes, turning left instead of going around them should take no more effort than a typical left turn between small streets, while doing it the proper way requires a fairly tight turn. They seem mainly designed to force cars to slow down.