Caught by traffic light in curve of road (6)
I believe the answer is:
camber
'curve of road' is the definition.
(I've seen this before)
'caught by traffic light' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'by' means one lot of letters go next to another.
'traffic light' becomes 'amber' (I've seen this before).
'c'+'amber'='CAMBER'
'in' is the link.
(Other definitions for camber that I've seen before include "Upward curve of a road surface" , "Slight upward curve in road, wing etc" , "may appear on road" , "Convex shape of road surface" , "Curvature of aircraft wing" .)