Complete change of direction (1-4)

I think it could be either:

Which length description are you looking for?:

1-4

u-turn

'complete change of direction' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for u-turn that I've seen before include "Sharp reversal of direction" , "Complete reverse of car or attitude" , "Sudden complete change of plan" , "A complete reverse of direction" , "180 degrees change of direction" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.