What pavement markings are visible when holding short of the runway?

When holding short of the runway, pilots will observe two solid yellow lines. These markings indicate the boundary between the taxiway and the runway, and they serve as a visual cue for pilots to understand where they must stop to avoid entering the runway without clearance.

The use of solid yellow lines is specifically designed to indicate a clear and mandatory stop point for aircraft. This is crucial in maintaining safety and preventing runway incursions, ensuring that pilots are aware of the proximity to the active runway.

In contrast, other types of markings serve different purposes: dashed lines indicate a traffic flow or shared space, while solid red lines are often used for other delineations that do not apply at a holding point. Thus, the presence of two solid yellow lines serves as an important and specific regulatory marker for pilots when they are required to hold short of a runway.