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A ladder pattern you must not cross.
Also known as: ILS hold marking, Cat II/III hold, Ladder marking taxiway
The ICAO taxiway marking of the holding position protecting the instrument landing system's signal from interference.
Marks the holding position protecting the ILS signal from reflection by a taxiing aircraft.
Contexts: Navigation
Protects a radio beam rather than a physical space: an aircraft past this line is not in the way of anything, but its metal surfaces distort the guidance signal an aircraft on approach is following.
Contexts: Navigation
Only in force during low-visibility operations, so the same line may be crossed freely in good weather and not at all in fog — a marking whose meaning depends on conditions.
Contexts: Navigation
A yellow marking of two solid lines joined by regular cross bars, forming a ladder pattern across the taxiway.