US transport system: inclination to reduce amount up front (6)
I believe the answer is:
amtrak
'us transport system inclination to reduce' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'amount up front' is the wordplay.
I cannot quite see how this works, but
'amount' could be 'mt' (MT is an example) and 'mt' is located in the answer.
The remaining letters 'arak' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for amtrak that I've seen before include "transport organisation" , "US rail company" , "railway system" , "US passenger railway" , "Passenger train service in the US" .)