I can time railway route (9)
I believe the answer is:
itinerary
'route' is the definition.
(I know that route can be written as itinerary)
'i can time railway' is the wordplay.
'i can' becomes 'itin' (I can't justify this - if you can you should believe this answer much more).
'time' becomes 'era' (era is a kind of time).
'railway' becomes 'ry' (abbreviation for railway).
'itin'+'era'+'ry'='ITINERARY'
Can you help me to learn more?
(Other definitions for itinerary that I've seen before include "Record of a journey" , "Proposed route of travel" , "List of places" , "schedule" , "Tiny airer? (anagram)" .)