What is the width of the single continuous yellow taxiway line?

What is the width of the single continuous yellow taxiway line?

• A. 6 to 12 inches
• B. 1 to 2 inches
• C. 2 to 4 inches
• D. 12 to 24 inches

Answer: (A)

The line that guides you along the taxiway is the centerline, and its width is set to be clearly visible while staying distinct from other markings. A single continuous yellow centerline is standardized to be between 6 and 12 inches wide, which provides a reliable visual cue for keeping the aircraft centered on the taxiway at typical taxiing distances. If the line were much narrower, it could be hard to see; if it were much wider, it could blur with adjacent markings or look like an edge rather than a centerline. So the 6 to 12 inch range reflects the practical balance between visibility and clarity for guiding taxiing aircraft.

The line that guides you along the taxiway is the centerline, and its width is set to be clearly visible while staying distinct from other markings. A single continuous yellow centerline is standardized to be between 6 and 12 inches wide, which provides a reliable visual cue for keeping the aircraft centered on the taxiway at typical taxiing distances. If the line were much narrower, it could be hard to see; if it were much wider, it could blur with adjacent markings or look like an edge rather than a centerline. So the 6 to 12 inch range reflects the practical balance between visibility and clarity for guiding taxiing aircraft.