The chap to correct weaknesses in transport? (5)
I believe the answer is:
coach
'transport?' is the definition.
(I know that coach is a type of public transport)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for coach that I've seen before include "Instruct" , "Vehicle; instructor" , "Type of bus" , "Train the bus" , "Trainer as of soccer team" .)