Zebra crossing light (7,6)
I believe the answer is:
belisha beacon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">zebra crossing light</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for belisha beacon that I've seen before include "Light indicating pedestrian crossing" , "Zebra crossing light" , "Flashing marker alongside1 across" , "Road crossing light" , "light by the way" .)