This shows the rates at which traffic becomes endlessly confused (6)
I believe the answer is:
tariff
'rates at which traffic becomes endlessly confused' is the definition.
'tariff' can be an answer for 'rates' (thesaurus). I'm not sure about the remainder of the definition.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for tariff that I've seen before include "List of prices or charges" , "Government tax on imports" , "List of duties on imports or exports" , "Table of fixed charges" , "Menu" .)