Reads ‘I do’ untidily on the kerb (8)
I believe the answer is:
roadside
'the kerb' is the definition.
(I've seen this before)
'reads i do untidily' is the wordplay.
'untidily' is an anagram indicator (I've seen this in other clues).
'reads'+'i'+'do'='readsido'
'readsido' is an anagram of 'ROADSIDE'.
'on' acts as a link.
(Other definitions for roadside that I've seen before include "Position of pavement artist" , "kerb" , "Bordering on the street" , "Oddly enough, the edge of the thoroughfare is adored" , "Carriageway border" .)