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A line letter and number in a coloured ring.
Also known as: Station numbering Japan, Line letter and number Japan
Identifies a Japanese railway station by a line letter and a sequential number, so that a station can be found without reading Japanese.
Identifies a station by its line and its position along it.
Contexts: Public information
Was rolled out across the Japanese network principally for visitors, and has a second effect its designers describe: because the numbers run in sequence, a passenger can tell how many stops remain without recognising a single station name.
Contexts: Public information
A ring in the line's own colour enclosing a capital letter above or beside a two-digit numeral.
The line colour the ring is drawn in.