Roundabouts have to have splitters and other features that traffic calming circles lack. Also, technically you can go whichever way you want around a traffic c

Roundabouts have to have splitters and other features that traffic calming circles lack. Also, technically you can go whichever way you want around a traffic calming circle: counterclockwise is recommended, but many trucks physically cannot navigate them that way. And there are zero traffic laws distinguishing a traffic calming circle from an uncontrolled intersection.