Normal position on a road (8)
I believe the answer is:
standard
'normal' is the definition.
('standard' is associated in meaning with 'normal')
'position on a road' is the wordplay.
'position' becomes 'stand' (stand is a kind of position).
'on' is a charade indicator (letters next to each other).
'road' becomes 'rd' (abbreviation).
'stand'+'a'+'rd'='STANDARD'
(Other definitions for standard that I've seen before include "banner" , "'Reference point, touchstone (8)'" , "Ordinary Level?" , "Normal, average" , "Reference point, benchmark" .)