For the conveyance of goods, trains run to time (7)
I believe the answer is:
transit
'for the conveyance' is the definition.
(I've seen this before)
'trains run to time' is the wordplay.
'run' indicates anagramming the letters.
'to' means one lot of letters go next to another (I've seen this in other clues).
'time' becomes 't' (abbreviation).
'trains' anagrammed gives 'ransit'.
'ransit' put after 't' is 'TRANSIT'.
'of goods' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for transit that I've seen before include "The act of carrying from one place to another" , "Shipment from A to B" , "Passage of planet across the disc of the sun" , "In migration" , "The process of going or conveying" .)