What is indicated by a taxiway ending marker sign?

A taxiway ending marker sign is specifically designed to indicate that the taxiway does not continue beyond the intersection. When a pilot or ground crew encounters this sign, it serves as a clear indication that the taxiway they are currently on is about to end or that they are approaching an area where taxiing is not permitted. This is crucial for maintaining safety, as it helps to prevent aircraft from inadvertently taxiing into areas where further movement is not possible or where additional navigation is required.

This marker is especially important at busy airports where awareness of the taxiway system is vital for managing aircraft movement and ensuring proper spacing. The other options refer to different regulatory signs or informational signs that serve other purposes in the airport environment, such as identifying prohibited areas or providing directional guidance to specific taxiways.