I must look like someone knowledgeable - not only at stations but I have often been stopped in the street and asked for directions.
In London I can usually come up with an answer but I have also been asked in Paris, Antwerp and elsewhere - if I don't know I will admit it although it is tempting to make something up !
My bolding -- I gather that people doing this, can be a bit of a hazard for visitors to some parts of the world; locals asked for directions don't want to "lose face" by admitting they don't know: so they make stuff up, and the enquirer gets yet more badly lost. I've seen Latin America mentioned re this habit, a few times.