Overtake disoriented tourist before parking (8)
I believe the answer is:
outstrip
'overtake' is the definition.
(I've seen this before)
'disoriented tourist before parking' is the wordplay.
'disoriented' indicates anagramming the letters.
'before' means one lot of letters go next to another.
'parking' becomes 'p' (abbreviation on road signs).
'tourist' anagrammed gives 'outstri'.
'outstri'+'p'='OUTSTRIP'
(Other definitions for outstrip that I've seen before include "Go far ahead of" , "Surpass, overtake" , "Surpass, do better than" , "Exceed; move faster than" , "eclipse" .)