YYY: In our area, these same brave guys painted the yellow patch with the usual color. To the question of Nafiga to do this, I received a reasonable answer "So this is to help the blind!"

The author, apparently, does not know that in addition to the blind, there are also people with impaired vision. Only yellow stripes can be seen.

It’s like the gasterbyter who scratched the leaves from the trees (in order to replace them once, and after half an hour they didn’t attack again). You don’t understand the meaning of something – rather declare it silly. You see, you are clever.