Time Keir reformed accessible transport (5)
I believe the answer is:
trike
'accessible transport' is the definition.
'trike' can be an answer for 'transport' (trike is a kind of transport). I'm not certain of the 'accessible' bit.
'time keir reformed' is the wordplay.
'time' becomes 't' (abbreviation).
'reformed' indicates anagramming the letters.
'keir' anagrammed gives 'rike'.
't'+'rike'='TRIKE'
Can you help me to learn more?
(Other definitions for trike that I've seen before include "transport system" , "Tricycle (inf.)" , "Briefly solvent" , "Three-wheeled vehicle" , "Three-wheeler" .)