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New Australian road signs are the first in the world to use what technology?

Answer: E Ink

Fifteen new road signs in Sydney, Australia, developed by Visionect use E Ink displays similar to those found on popular e-readers like the Amazon Kindle. The solar-powered signs connect to a central server via 3G wireless connection and illuminate the display with an internal light when it gets dark. Some suggest the programmable signs might help cities save money because new signs won’t need to be installed during special events.