Buses and trains (7)
I believe the answer is:
transit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">buses and trains</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 transit that I've seen before include "The act of carrying from one place to another" , "Change" , "Conveyance of goods or people - tin star (anag)" , "Passage of heavenly body" , "Pass across/through" .)