Countdown counters are pretty common for pedestrians, letting them know how much time they have to cross. Drivers could use them too, and might even save a bit of time and energy if they were ready to roll when the light changed. Thanva Tivawong has designed this very clever interpretation of a traffic signal that could only work with LEDs. This is so much better than the tired old designs that have been around forever…. Read the full story on TreeHugger
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LEDs Make Clever Interactive Traffic Light Design Possible
