Traffic light was redesigned by a designer named Thanva Tivawong.
Sand Glass Traffic light is a concept which gives visual feedback as how long you’re going to be wedged at a junction. Sand Glass use hourglass as a sign and lets its LED-pixels bleed through the lamp’s waist one by one, so you can have an accurate idea when the lights will change.
The flowing virtual-sand is ample clear already, and allows for adjustment of the time remaining, something hard to do unnoticeable with numbers.
Yellow light will be completely removed by the Sand Glass. The yellow lamp is a throwback to times when both lights at a crossroads would be controlled by the same switch: flipping both lights simultaneously would be dangerous, so the yellow light provided a buffer in both directions. With the clear visual timing-signals in the Sand Glass, yellow could finally be retired.
It’s an incredibly simple idea: LED lights trickle down in a virtual sand glass that countdowns how much more Red and Green there will be. When it approaches 3 seconds left, the LEDs switch to yellow and give you an exact count on what’s left.
It is very tempting as one can exactly predict the next change of the lights.