The same could be said for the dots. They do provide some use as I’m sure they make some people aware of safe driving distance, but otherwise, they’re not changing anyone’s habits.

And frankly, the two-dot distance looks entirely too large on that road. You’d probably be fine with one.

I bet the top layer was great.

Yeah, but not too many people poo, stand, flush, see streaks, and have enough left in their bladder to “wash” them off. Most people do both while sitting (I assume…?).