What color are runway designation signs?

• A. White with black numbers
• B. Red with white numbers
• C. Yellow with black numbers
• D. Black with white numbers

Answer: (B)

Knowing runway designation signs helps you confirm you’re on the correct runway as you taxi or before entering the runway. These signs use a red background with white numerals to clearly identify the runway you’re about to enter, making them stand out as a critical boundary that requires clearance or careful attention. This color scheme is distinct from other signs on the airfield: taxiway signs are typically yellow with black lettering, runway distance remaining signs are black with white numbers, and hold-short signs are red with white letters. So red with white numbers best communicates the runway designation you’re approaching.