A traffic circle is a central island in the middle of an intersection, where all vehicles must travel to the left of the island. Traffic circles can be small (a mini-circle drawn on the road surface), large (a roundabout with a physical middle section), single-laned or multi-laned. The number of roads that come into a roundabout can range from three to five or even more.
At a traffic circle, you must yield right of way to any traffic approaching from the right, unless there is a road sign or a traffic officer instructing something else. Any vehicles inside the traffic circle that have already crossed any yield line, have right of way for traffic outside the traffic circle. There may be signs at or coming up to traffic circles; these should be adhered at all times.
If you are turning left at the first exit of a roundabout, signal left as you come up to the traffic circle.
If you are going 'straight' through a traffic circle:
If you are traveling further than the halfway through the traffic circle: