Type of road rage evident in decrepit car (6)
I believe the answer is:
banger
'decrepit car' is the definition.
'banger' can be an answer for 'car' (I have seen 'Old car ' mean 'banger' so perhaps 'car' could also mean 'banger'). I'm not sure about the 'decrepit' bit.
'type of road rage' is the wordplay.
'type of road' becomes 'b' (I can't explain this - if you can you should believe this answer much more).
'rage' becomes 'anger' (I've seen this in other clues).
'b'+'anger'='BANGER'
'evident in' is the link.
Can you help me to learn more?
(Other definitions for banger that I've seen before include "Old rattling car or slang sausage" , "Clapped-out car" , "Old and unreliable car" , "Noisy old car or slangy sausage" , "Sausage, firework and old car" .)