Touchdown zone markings shall be in groups of three, two, or one rectangular bars arranged in pairs on the runway centerline and shall be __ ft wide and __ ft long.

• A. 6 ft wide and 60 ft long
• B. 6 ft wide and 75 ft long
• C. 8 ft wide and 75 ft long
• D. 6 ft wide and 90 ft long

Answer: (B)

Touchdown zone markings are sized to give pilots a clear visual cue for where to touch down. Each rectangular bar is standardized to be 6 feet wide and 75 feet long, and they appear in symmetrical pairs on either side of the centerline in groups of three, two, or one as you move down the runway. This consistent sizing helps pilots quickly gauge distance to the threshold during landing. The option with 6 feet wide and 75 feet long matches this standard, while the other choices use incompatible dimensions.