Ice-Alerting Varnish in the Works

Some forward-thinking folks at France’s Eurovia have developed a temperature-sensitive varnish that could warn motorists when roads are icy. An early look shows the varnish’s standard white hue, as well as the pink it turns when temperatures drop below a certain point. This would be a great — and presumably not too expensive — way to warn motorists of hazardous conditions.

Color-shifting roads warn of ice (Autoblog)