What is indicated by a pattern of longitudinal stripes of uniform dimensions disposed symmetrically about the centerline of a runway?

Question

Question Quiz SPL - Sailplane Pilot License - Air Law

QuizVDS · Accepted Answer

Do not touch down before them

QuizVDS · Answer

At this point the glide path of an ILS hits the runway

QuizVDS · Answer

Do not touch down behind them

QuizVDS · Answer

A ground roll could be started from this position

Id 53 - SPL - What is indicated by a pattern of longitudinal stripes of uniform dimensions disposed symmetrically about the centerline of a runway?