It provides useful information to pilots in an uncontrolled airport regarding flight pattern, wind direction, and, wind speed. A pilot observing a segmented circle from the sky will identify the runway and correct traffic patterns by looking into a segmented circle. A segmented circle includes a runway complex, a wind direction indicator, and, a traffic pattern indicator in the form of an L shape. Runway numbers are not identified on the circle and usually, it is mounted for the adjacent runway.