Motorway route cut short as data misread (10)
I believe the answer is:
autostrada
'motorway' is the definition.
(autostrada is a kind of motorway)
'route cut short as data misread' is the wordplay.
'cut short' means to remove the last letter.
'misread' indicates an anagram.
'route' with its last letter taken off is 'rout'.
'rout'+'as'+'data'='routasdata'
'routasdata' anagrammed gives 'AUTOSTRADA'.
(Other definitions for autostrada that I've seen before include "fast route" , "expressway" , "way Mafiosi might take?" , "European highway" , "a big way" .)