Yield to vehicle reversing beside motorway intersection (6)
I believe the answer is:
submit
'yield to' is the definition.
(thesaurus)
'vehicle reversing beside motorway intersection' is the wordplay.
'vehicle' becomes 'bus' (public transport vehicle).
'reversing' shows that the letters should be reversed in order.
'beside' means one lot of letters go next to another (I've seen this in other clues).
'motorway' becomes 'MI' (resembles M1, English motorway).
'intersection' becomes 'T' (T junction).
'bus' written backwards gives 'sub'.
'sub'+'mi'+'t'='SUBMIT'
(Other definitions for submit that I've seen before include "Give in to another's wishes" , "Yield to the control of another" , "Refer for judgement or consideration" , "Yield, surrender" , "Throw in the towel" .)