Traffic problem a blind mouse would have welcomed? (8)

I believe the answer is:

tailback

I'm a little stuck... Click here to teach me more about this clue!

'traffic problem' is the definition.
(a tailback is a queue of traffic)

I can't explain the rest of the clue.

(Other definitions for tailback that I've seen before include "Sort of jam" , "Long queue of traffic" , "delayed traffic" , "Traffic jam" , "Queue of cars" .)

I've seen this clue in The Times.

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