What feature indicates hold marking lines on the taxiway?

The feature that indicates hold marking lines on the taxiway is two solid yellow lines with two dashed yellow lines. This specific configuration is designed to visually communicate to pilots and ground vehicle operators where they should stop before entering a runway or crossing an area where they need to yield to other aircraft.

The two solid yellow lines signify that this is a restriction area, meaning that vehicles and aircraft must not proceed beyond that point without explicit clearance. The adjacent dashed yellow lines indicate that there is some flexibility to enter or leave the area under certain circumstances, but caution must be exercised.

The clear distinction between solid and dashed lines serves to prevent misunderstandings and ensure safety on the airfield, aligning with standard aviation marking practices. This makes it critical for operators to recognize and understand these markings to maintain safety and compliance while navigating airside operations.