Officer who could get car crime initially confused with tip-off? (7,3)

'officer' is the definition.
(traffic cop is a kind of officer)

'get car crime initially confused with tip-off?' is the wordplay.
'get' means one lot of letters go next to another.
'initially' indicates taking the first letters.
'confused with' indicates an anagram.
The first letter of 'crime' is 'c'.
'car'+'c' is 'carc'.
'tip'+'off'='tipoff'
'carc' with its letters anagrammed with 'tipoff' can make 'TRAFFIC COP'.

'who could' acts as a link.