Goes by the mountain roads (6)

I believe the answer is:

passes

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'goes by' is the definition.
('pass' can be a synonym of 'go by')

I don't understand the remainder of the clue.

(Other definitions for passes that I've seen before include "never fails to get?" , "'Men seldom make . . . at girls who wear glasses'" , "Written permissions for absences" , "goes beyond" , "Tickets" .)

I've seen this clue in the Evening Standard.

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