What lighting indicates the edges of a taxiway?

Blue lighting is used to indicate the edges of a taxiway. This type of light helps pilots easily identify the taxiway boundaries during taxi operations, especially in low visibility conditions. The use of blue lights is standardized in aviation, making them a reliable reference point for navigating taxiways safely.

In contrast, other colors have specific meanings: white lighting is typically used for runway edge lights, signaling the boundaries of runways rather than taxiways. Red lighting is used in certain situations to indicate an obstruction or to show that an aircraft should not enter a specific area, such as when approaching a runway. Flashing green lighting is usually used to indicate that an aircraft should proceed to the runway, not to mark taxiway edges. Understanding these color designations is crucial for ensuring safe ground operations at airports.