3M Barcoded Road Signs

Autonomous vehicles will rely on technology, both onboard and external, such as GPS and radar to guide them. Those smart cars will also likely read road markings and signs for additional guidance and safety.

3M is developing road signs that have specially printed barcodes for self-driving cars, according to Business Insider.  This approach, in which the road signs simply have specially encoded information, is much simpler and presumably cheaper than infrastructure or vehicles communicating back and forth.

See the full article from Business Insider here...