The Circle is the Interstate Highway intersection of 90, 94, and 290 which is a major traffic bottleneck.
This engineering feat is also known as the spaghetti bowl (see related links).
A traffic circle is un rond-point.
Follow the road laws of the country that you are in. In some countries the traffic already in the circle has priority. In others, traffic entering the circle has priority. Very clearly a recipe for disaster if you forget which country with which rules you are in!
A black circle traffic sign indicates a mandatory action or instruction that must be followed by drivers.
Owen Gregory has written: 'The archives of the Chicago Board of Trade, 1859-1925' -- subject(s): Archives, Chicago Board of Trade, University of Illinois at Chicago Circle, University of Illinois at Chicago Circle. Library. Manuscript Collection
The circle sign in driving typically indicates a roundabout or traffic circle ahead. Drivers should yield to vehicles already in the circle and proceed with caution.
a circle is made up of angular measure, commonly called degrees. Also may be radians or grads. But 360 degrees constitutes a full circle
It's not the Circle, it's the Loop.
When exiting a traffic circle, you should signal your intention to leave by using your turn signal well in advance of your exit. Check your mirrors and blind spots for pedestrians, cyclists, and other vehicles before you move to the exit lane. Maintain a safe speed while navigating the circle, and yield to any traffic already in the circle if necessary. Once you've safely exited, deactivate your turn signal.
A circle in the middle of a road utilized to slow down traffic
The Arc de Triomphe in Paris.
CJ