Shifted tinker up toll road once (8)
I believe the answer is:
turnpike
'toll road once' is the definition.
(a turnpike was historically a type of toll road)
'shifted tinker up' is the wordplay.
'shifted' is an anagram indicator.
'tinker'+'up'='tinkerup'
'tinkerup' anagrammed gives 'TURNPIKE'.
(Other definitions for turnpike that I've seen before include "Old toll-gate, or new road with toll stations" , "Old barrier" , "Old gates across a road to prevent passage until a toll was paid" , "Toll road (hist.)" , "where one pays one's way" .)