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Flashing yellow at the hold.
Also known as: Hold position lights
The ICAO lighting installed at a runway holding position to make it conspicuous from the taxiway.
Marks a runway holding position conspicuously to aircraft on the taxiway.
Contexts: Navigation
Alternating flash is chosen because the eye detects change far better than steady light in a field already full of steady lights, which is why the pattern rather than the colour does the work.
Contexts: Navigation
A pair of yellow lights flashing alternately, mounted either side of the taxiway at the holding position, or a row of yellow lights set across the taxiway surface.