For a long time, I wondered why is there not a separate indication to signify a u-turn, e.g. the rear lights would have would have two segments for flickering lights - one spaced on top of the other - ...
Wall mount light switches that have a neat light indicator that turns on when the switch is in "off" position are quite common. The purpose is to make finding the switch in the dark easier. Looks ...
When thinking about how (real-world) traffic lights work, I wonder if there is a more intuitive way to display the yellow light. The meaning of Green and Red are states: Green: Ok, you can go! Red: ...