Color-Changing Roads

Eurovia out of France has been experimenting with color-changing road varnishes that warn drivers of conditions in real time.

If the temperature drops to a certian degree (I assume this is controllable) the color automatically changes. But so many road cues either lose their impact over time, or create unintended dangers. And if we can’t keep roads in decent condition as they are, how will this new color-changing material hold up. If those challenges are met, I say we move on to surfaces that just eliminate the dangerous conditions altogether.