One can time railway route (9)
I believe the answer is:
itinerary
'route' is the definition.
(I've seen this before)
'one can time railway' is the wordplay.
I cannot really see how this works, but
'one' could be 'er' (I've seen this in other clues) and 'er' is found within the answer.
'can' could be 'tin' (synonyms) and 'tin' is located in the answer.
'railway' could be 'ry' (abbreviation for railway) and 'ry' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for itinerary that I've seen before include "Plan of a journey, route" , "Proposed route of travel" , "Travel plan" , "Record of a journey" , "Planned journey" .)