an entry of central from Cambridge:
in, at, from, or near the center or most important part of something
In Australia, there is a railway station located in Sydney called Central Station. A broadcast in the metro to Central Station always says:
The next stop is Central.
Why does Central serve as a noun, a name here? Is it accepted or right grammatically?
In London the automated underground voice will announce trains (departing from or) arriving at Piccadilly, Highgate, Elephant and Castle etc. There's no need to add "station" the commuters/travellers who are waiting on the platforms, know they are in a station.
Central line is not an exception, even if it is a railway line and not the name of a station, people who use the underground will understand that Central refers to the line.
