Which sign uses Yellow Letters, Black Background?

Which sign uses Yellow Letters, Black Background?

• A. Direction
• B. Mandatory
• C. Warning
• D. Location

Answer: (D)

Color contrast on airport ground signs is used so pilots can read and interpret them at a glance, even in low light or at high taxi speeds. The sign with yellow letters on a black background identifies the current location on the airfield—specifically the taxiway you’re on. The dark background makes the bright yellow characters stand out, which is especially helpful for quick recognition during taxiing and night operations. This is different from direction signs, which typically use a yellow background with black letters and arrows to point you toward a destination. Other sign types follow different color conventions: mandatory signs use white on red, and warning signs use black on yellow. So the yellow-on-black combination signals a location identifier on the taxiway network.

Color contrast on airport ground signs is used so pilots can read and interpret them at a glance, even in low light or at high taxi speeds.

The sign with yellow letters on a black background identifies the current location on the airfield—specifically the taxiway you’re on. The dark background makes the bright yellow characters stand out, which is especially helpful for quick recognition during taxiing and night operations. This is different from direction signs, which typically use a yellow background with black letters and arrows to point you toward a destination. Other sign types follow different color conventions: mandatory signs use white on red, and warning signs use black on yellow. So the yellow-on-black combination signals a location identifier on the taxiway network.