Tourist runs into truck (7)
I believe the answer is:
tripper
'tourist' is the definition.
(I know that tripper is a type of tourist)
'runs into truck' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'into' means one lot of letters goes inside another.
'truck' becomes 'tipper' (I've seen this before).
'r' going within 'tipper' is 'TRIPPER'.
(Other definitions for tripper that I've seen before include "Someone out for day" , "at risk of sustaining injury?" , "person having highly enjoyable experience?" , "Person on an excursion" , "One hoping to enjoy journey" .)