Where would a taxiway sign be expected at an intersection with a runway?

A taxiway sign is specifically designed to provide guidance to pilots as they maneuver on the ground, particularly where taxiways intersect runways. At an intersection with a runway, a taxiway sign is placed to ensure that pilots clearly understand the layout and direction of the taxiway they are on, as well as any pertinent information about the runway they may be approaching.

This sign is crucial for maintaining safety and efficiency in airport operations, as it aids in preventing confusion and potential runway incursions. The placement of such signage at these specific intersections ensures that pilots have the necessary information right where they need it, enhancing situational awareness while on the ground.

Other locations mentioned in the options, such as the departure end of the runway or near the terminal building, serve different purposes and do not provide the same immediate guidance at the critical point of intersection. Similarly, having a sign midair above the runway would not be practical or effective, as ground operations rely on visual cues that are directly accessible from the cockpit while taxiing or preparing for takeoff.