Charge for transportation in part of train (8)
I believe the answer is:
carriage
I believe this clue is a double definition.
'charge for transportation' is the first definition.
(cost of transporting something)
'part of train' is the second definition.
'in' acts as a link.
(Other definitions for carriage that I've seen before include "Deportment; vehicle" , "Vehicle - bearing" , "Railway vehicle" , "Coach - deportment" , "Bearing, deportment" .)