The problem with roundabouts in the states is circular: Nobody likes them or knows how to use them so they need to have tons of signs and restrictions on them

The problem with roundabouts in the states is circular: Nobody likes them or knows how to use them so they need to have tons of signs and restrictions on them so people don't kill themselves or go around the wrong way (the ones near my parents house actually have stop signs at every entrance). This complicates things and stops them working very effectively, resulting in people not liking them or knowing how to use them right. If they had simply dropped them in place without comment, people would have spent a few weeks crashing into each other and then figured it out and they would work fine.