Plain English Meaning
These are yellow markings painted directly on the taxiway surface that tell you the name of an intersecting taxiway and which way to turn to reach it. They do the same job as the yellow direction signs you see on posts beside the taxiway, but they are painted onto the ground instead.
Full Definition
Yellow painted markings on the taxiway pavement that show the designation and direction of an intersecting taxiway. They consist of a black inscription on a yellow background, and are used in place of, or to supplement, elevated taxiway direction signs — typically where it is impractical to install standard signs, such as on wide pavements or at complex intersections.
Context Anchor
Seen while taxiing on airport pavement, especially near taxiway intersections where a pilot must choose the correct turn.
Why Pilots Care
These signs help pilots complex taxiway layouts without getting lost or entering the wrong , reducing the of .