Raised pavement markers come in a variety of reflective colors, some of which (like white and yellow) have guessable meanings borrowed from painted road line conventions. But there are other colors to (like blues and greens) that relay more information to those in the know. Some colors cue police officers, emergency personnel or maintenance workers, showing them where they
We have some in BC, Canada that are lane markers. white/yellow on one side, red on the other. this way when you are in your proper lanes you see white/yellow, but if you are in the opposing lane the backs of them show red, so you know you shouldn’t be driving into that lane
We have some in BC, Canada that are lane markers. white/yellow on one side, red on the other. this way when you are in your proper lanes you see white/yellow, but if you are in the opposing lane the backs of them show red, so you know you shouldn’t be driving into that lane