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Yellow lettering on black, naming where you are.
Also known as: Taxiway identifier sign, Black aerodrome sign
A black aerodrome sign with yellow lettering says which taxiway or runway the aircraft is on. Location signs answer where am I; direction signs, which reverse the colours, answer which way to what.
States the taxiway or runway an aircraft is currently on, lettered yellow on black.
Contexts: Public information, Navigation
Reverses its colours to become a direction sign, which is black on yellow and names where a turn leads rather than where the aircraft is.
Contexts: Public information, Navigation
A rectangular panel with a black field carrying a yellow capital letter or numeral and a yellow border.