Highways (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">highways</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for roads that I've seen before include "Ways, routes" , "Routes for vehicles" , "Surfaced ways" , "an answer to all clues, initially" , "Open ways" .)