Italian motorway that is divided by its separate sections (8)
I believe the answer is:
milanese
'italian motorway that is divided by its separate sections' is the definition.
'milanese' can be an answer for 'italian' (I've seen this before). I am not certain of the remainder of the definition.
'italian motorway that is divided by' is the wordplay.
'italian' becomes 'lanes' (I can't explain this - if you can you should believe this answer much more).
'motorway' becomes 'M' (as in motorway names - Ml, Me etc).
'that is' becomes 'ie' (short for Latin 'id est', 'that is').
'divided by' is an insertion indicator (inserted letters divide the word).
'm'+'ie'='mie'
'lanes' going within 'mie' is 'MILANESE'.
Can you help me to learn more?
(Other definitions for milanese that I've seen before include "Inhabitants of Italy's second city" , "From a N. Italian city" , "Native to one Italian city" .)