I'm wondering ...... Why do some runways have a a full set of runway distance markings painted at one end of the rwy to show 500 foot increments of distance past the touchdown zone marks (the large white rectangles), but, the other end only has the touchdown zone markings and nothing more?
I suspect that it has something to do with runways that only allow aircraft to takeoff and land in one direction, however, I've got a mental block as to how pilots would use the available rwy markers in this situation.
I hope this question is clear.
A runway with full markings ......
Photo © Jan Mogren
A runway with markings at only one end ......
Photo © Andrew Hunt