Move at a fair speed, taking wrong turning (4)
I believe the answer is:
trot
'move' is the definition.
(I know that trot is a type of locomotion)
'wrong turning' is the wordplay.
'wrong' becomes 'tort' (legal term).
'turning' is a reversal indicator.
'tort' backwards is 'TROT'.
'at a fair speed taking' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
(Other definitions for trot that I've seen before include "Militant socialist (informal)" , "Brisk movement" , "Go or walk briskly" , "Fairly fast pace of a horse" , "Communist - horse pace faster that a walk" .)