Foreign currency for rail travel (4)
I believe the answer is:
'foreign currency' is the definition.
'lira' can be an answer for 'currency' (I've seen this before). I am not certain of the 'foreign' bit.
'rail travel' is the wordplay.
'travel' is an anagram indicator (I've seen 'travelling' mean this).
'rail' with letters rearranged gives 'LIRA'.
'for' is the link.
Can you help me to learn more?
(Other definitions for lira that I've seen before include "Monetary unit of Italy" , "Old unit of Italian money" , "old European capital" , "Former unit of money in Italy" , "Former Italian currency unit" .)