Answering the question as it was clearly intended (ie ignoring termini where trains reverse). So a formal definition would be something like a station where you can arrive only from one direction and depart only in the same direction (that is away from where you can arrive from). I will include metro systems but not trams, as you have to draw a line somewhere and there are TONNES of tram stops that qualify…:
I haven’t spotted any more so far!
Credit:stackoverflow.com‘