Comment Re:flicker crashes (Score 2, Interesting) 303
We've been using LEDs in traffic lights for many years in Australia. The whole system runs from 12v DC (it did so for years even with incandescent globes too), so flicker isn't a problem. The issue of differing brightness of each colour of LED is addressed by having differing amounts of LEDs in each colour light, depending on relative brightness. This works quite well, they all appear to be around the same brightness to the eye.