A touchdown zone marking shall conform to either of the two
patterns shown in Figure 5-5. For the pattern shown in Figure
5-5 (A), the markings shall be not less than 22.5 m long and 3
m wide. For the pattern shown in Figure 5-5 (B), each stripe of
each marking shall be not less than 22.5 m long and 1.8 m wide
with a spacing of 1.5 m between adjacent stripes. The lateral
spacing between the inner sides of the rectangles shall be
equal to that of the aiming point marking where provided.
Where an aiming point marking is not provided, the lateral
spacing between the inner sides of the rectangles shall
correspond to the lateral spacing specified for the aiming
point marking in Table 5-1 (columns 2, 3, 4 or 5, as
appropriate). The pairs of markings shall be provided at
longitudinal spacings of 150 m beginning from the threshold
except that pairs of touchdown zone markings coincident with
or located within 50 m of an aiming point marking shall be
deleted from the pattern