Where double lines are uncommitted? (6,2,3,4)
I believe the answer is:
middle of the road
'where double' is the definition.
Both the answer and definition are adjectives. Perhaps there's a link between them I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for middle of the road that I've seen before include "position adopted by one planning to pass?" , "avoiding extremes" , "place to put the dotted line?" , "cars shouldn't cross it" , "place for one just passing" .)