Roadside area (3-2)
I believe the answer is:
lay-by
'roadside area' is the definition.
(area by the side of a road)
This is the entire clue.
(Other definitions for lay-by that I've seen before include "Off-road stopping place" , "Stopping-place" , "Area where drivers can pull over" , "Drivers' pull-in" , "Roadside parking place" .)