What do Taxiway directional signs look like?

Taxiway directional signs at airports are designed with a specific color and format to convey information to pilots and ground personnel effectively. The correct choice, which describes these signs as a yellow box with black font and an arrow, is accurate because this color combination is standard for taxiway directional signage.

The yellow background indicates caution and is clearly visible during day and night, ensuring that the signs can be easily discerned under various visibility conditions. The black font provides a high contrast against the yellow, making it easier to read the sign quickly. The presence of an arrow guides pilots and drivers on the correct direction to take while navigating the taxiways, thereby enhancing safety and efficiency on the airside of the airport.

Other color combinations mentioned in the choices do not align with the established aviation standards for taxiway directional signs, which is why they are not accurate representations of what these signs typically look like.