Elegant transport going west (5)
I believe the answer is:
smart
'elegant' is the definition.
(similar in meaning)
'transport going west' is the wordplay.
'transport' becomes 'trams' (trams are a type of public transport).
'going west' is a reversal indicator (letters heading to the west or left).
'trams' backwards is 'SMART'.
(Other definitions for smart that I've seen before include "Intelligent; clean, tidy" , "Clean, tidy; clever" , "fly" , "turned out nicely" , "Clean and stylish" .)