Solar-Powered Traffic Signs

A Japanese company, Lintec Corp, is marketing solar-powered traffic signs. They are wireless, too, and supposedly save $2,800 on electricity over 10 years. The lights use LEDs, which means the bulbs don’t need to be changed for a decade. One other advantage is that the traffic signs will continue working if there's a power outage. Prices start at $960. :: Gizmodo via Groovy Green