How do segmented circles help with traffic patterns?

Segmented circles are designed to assist pilots in maintaining situational awareness, particularly in approach and landing phases during daylight. They are visual aids positioned around an airport that help to inform pilots of the traffic patterns and the designated landing and takeoff runways.

By using different colors and segments, these circles visually convey critical information such as the active runways and traffic directions, thus enhancing a pilot's ability to make quick and informed decisions while navigating in the vicinity of the airport. This visual representation supports pilots in avoiding conflicts with other aircraft, especially in busy airspace, and greatly improves safety.

The other options, while relevant to aviation, do not directly describe the primary function of segmented circles. Navigational charts, altitude levels, and runway lighting control serve other essential purposes but are not related to the specific visual traffic management role that segmented circles provide.