Definition
A continuous yellow stripe painted along the middle of a taxiway that identifies the path the airplane's nose wheel should follow during taxi operations. When the pilot keeps the nose wheel on this stripe, the airplane remains within the protected taxiway area, clear of obstacles, lights, and signs along the edges.
Plain English
A solid yellow line down the middle of the taxiway that shows you where to steer. If you keep the nose wheel on the line, your wings and tail stay safely clear of anything along the sides.
Context Anchor
Seen while taxiing on airport pavement, especially when following a taxi route from parking to a runway or from a runway back to parking.
Why Pilots Care
Staying on the marked center path prevents the aircraft from leaving the paved surface or entering unauthorized areas, directly reducing runway incursion risk.
Analogy
They work much like the line you use to stay centered in a lane on a road, but they apply to aircraft moving on the airport surface.
Intuition Check
Do not think of the stripes as decoration or only a rough suggestion. On a taxiway, they mark the normal path the aircraft should follow while taxiing.
Example Sentence 1
After receiving taxi clearance, the pilot released the brakes and steered the airplane so the nose wheel tracked the taxiway centerline stripes.
Example Sentence 2
In low-visibility conditions the taxiway centerline stripes remained visible and guided the aircraft safely across the intersection.