Final answer:
A runway hold position sign is a critical safety feature at airports, indicating where aircraft should stop and wait for clearance before entering an active runway.
Step-by-step explanation:
A runway hold position sign indicates where an aircraft is supposed to stop to ensure it does not enter an active runway without clearance. These signs have white inscriptions on a red background and are generally found at taxiway intersections with runways. When pilots see this sign, they must come to a complete stop and cannot proceed until they have received clearance from air traffic control. It's a critical safety feature in airport ground operations to prevent runway incursions, which could lead to potentially hazardous situations.
A runway hold position sign is a sign used in aviation to instruct pilots to stop and wait before proceeding onto the runway. It is typically located at the entrance to a runway and marks the area where aircraft should stop to allow other aircraft to take off or land. The sign includes both a solid white line extending across the taxiway and a sign with red lights, which are illuminated when an aircraft is cleared to enter the runway.