What symbol is used on an airfield diagram to indicate an overrun?

The symbol used on an airfield diagram to indicate an overrun is an arrow. This is significant because the arrow helps convey operational information regarding the runway's layout and safety features. Overruns are designed sections at the end of a runway that provide additional space for aircraft to decelerate in case of aborting a takeoff or in an emergency landing situation.

The presence of this arrow symbol guides pilots and air traffic controllers in understanding the available safety measures on the airfield, ensuring that they can make informed decisions during operations. This clear indication is essential for both safety and operational efficiency in aviation settings.

Other symbols, such as circles, triangles, and X's, are typically used to denote different features or issues on an airfield diagram but do not specifically represent overruns, further clarifying why the arrow is the appropriate choice.