Express lane unit (4)
I believe the answer is:
item
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">express lane unit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for item that I've seen before include "Single unit" , "Matter" , "One thing on a list" , "Piece of news: unit" , "couple making out {TIME}..." .)