A bright idea: street lamps only turn on when cars come by, a 35% power reduction pic.twitter.com/YhIwQQXCl7
— Vala Afshar (@ValaAfshar) February 18, 2018
from Twitter https://twitter.com/srini_venkat
Sunday, February 18, 2018
RT @ValaAfshar: A bright idea: street lamps only turn on when cars come by, a 35% power reduction https://t.co/YhIwQQXCl7
from Twitter https://twitter.com/srini_venkat
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