On which part of the airfield is the runway number displayed?

• A. Approach
• B. Threshold
• C. Runway Edge
• D. Centerline

Answer: (A)

Runway numbers indicate the runway’s magnetic orientation and are placed where pilots see them as they approach the runway. They are painted on the surface at the approach end so the approaching aircraft can quickly confirm which runway they’re lining up with. The other elements aren’t where the designation is displayed: the threshold marks the start of the usable pavement, runway edges are for boundary markings, and the centerline runs down the middle of the surface but does not carry the runway designation. So the best fit is the approach end, where the heading information is most useful to the approaching pilot.