Start to reduce speed east of Lincoln? Wanderer might do this! (8)

'wanderer might do this' is the definition.

'start to reduce speed east of lincoln?' is the wordplay.
'start to' indicates taking the first letters.
'speed' becomes 'rate' (rate is a kind of speed**).
'east of' says to put letters next to each other.
'lincoln?' becomes 'abe'.
The initial letter of 'reduce' is 'r'.
'r'+'rate'='rrate'
'rrate' put after 'abe' is 'ABERRATE'.