Final answer:
A runway hold position marking on the taxiway indicates the location where aircraft should stop and wait for clearance before entering the runway.
Step-by-step explanation:
A runway hold position marking on the taxiway indicates the location where aircraft should stop and wait for clearance before entering the runway. These markings are typically painted as double solid yellow lines across the width of the taxiway, often accompanied by a sign with the words 'HOLD SHORT.' This marking serves as a visual indication for pilots to stop and await authorization from the air traffic control before proceeding onto the runway.