Which signs specifically assist pilots in understanding taxiway designations?

The correct answer focuses on direction signs as they serve a critical function in conveying the specific designations and directions of taxiways. Direction signs are strategically placed to guide pilots along the taxiway system, indicating where they should proceed next to navigate the airport efficiently. These signs typically feature arrows that point toward the designated taxiways and runways, helping pilots understand which path to take in order to reach their destination safely.

In contrast, other signs have different purposes. Location signs provide the current position of the aircraft on the ground, denoting specific taxiways, runways, or other important geographical points. FBO signs highlight Fixed Base Operators, which may offer services such as fuel and maintenance, but do not offer information regarding taxiway navigation. Runway edge lights, while essential for indicating runway boundaries, do not assist pilots in understanding taxiway designations and are more relevant for operations on runways themselves.