What the director in charge of transport did (7)
I believe the answer is:
steered
'did' is the definition.
The definition and answer can be both to do with motion as well as being past participle verbs.
Perhaps you can see a link between them that I can't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for steered that I've seen before include "taken the helm" , "Went on a course" , "Guided or directed, ship or plane" , "given guidance" , "given the push" .)