The first set of US runway touchdown zone markings currently change based on runway length. This is incorrect. The touchdown zone markings at 500’ should always be a set of three painted stripes.
Only the touchdown markings near the midpoint of the runway change based on runway length.
7,990 or greater: Full set of markings
6,990 - 7989 Less one grouping of rectangular bars from each
runway end nearest to the runway midpoint
5,990 - 6,989 Less two groupings of rectangular bars from each
runway end nearest to the runway midpoint
4,990 - 5,989 Less three groupings of rectangular bars from each
runway end nearest to the runway midpoint
The width of painted stripes changes slightly based on runway width.
0-100’: 75’Lx4’W
100’: 75’Lx6’W
