Streetlights Switch On Only When You Need Them

And help reduce CO2 emissions when you don't. Streetlights leave a huge carbon footprint. One potential solution is to treat them more like houselights: shut them off when we're not around. Tvilight, a smart streetlight project from Dutch designer Chintan Shah, does that by using motion-detecting sensors. Plug them on to new or existing streetlights, and they can detect when a vehicle or pedestrian is heading through, then light up to show the way. The lamps also capture speed, so they can antic...