What indicates the current location of a vehicle on an airfield?

Location signs are specifically designed to indicate the current location of a vehicle on an airfield. These signs provide information about the vehicle's position in relation to runways, taxiways, and other important areas on the airport. They typically feature a combination of letters and numbers that denote the specific taxiway or runway that the vehicle is near, which is crucial for maintaining safe and efficient operations in the busy environment of an airport.

Directional signs guide pilots and drivers towards specific destinations, while traffic signs are primarily used to manage vehicle movement and ensure safety on the airfield. Runway designation signs serve a different purpose by indicating the names and numbers of runways, rather than pinpointing the location of a vehicle. Thus, location signs are the correct choice for identifying where a vehicle is situated in relation to the airfield layout.