It would only be difficult to implement due to how unwilling we humans are to change. We all know the penny is...
…that’s what the lights are for. Colorblindness still lets you distinguish between brightness it’s just more difficult...
The current system is good enough. These would be a collassal waste of money. I’m holding out for self-driving cars.
If they’re colorblind, how are the driving now? If anything it’s better since it counts down during yellow.
C’mon colourblind people get your shit together.