I've been thinking of a problem Waze might find not that difficult to solve. Congestion leves are represented by different shades of colors, mainly yellows and reds. But lots of people around the world are color blind at some level, so the congestion colors are useless for them. I am suggesting that instead of simply using the plain shades of the colors, Waze star using hatched colors. This might be really helpful to a lot of people. Besides, this would help build an inclusive culture and policy.