Traffic signal (5)
I believe the answer is:
light
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">traffic signal</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 light that I've seen before include "Portable" , "not overburdened" , "What smoker may be requesting" , "Easily lifted" , "Not having full load" .)