May 17
In the 10 years since President Clinton ordered the military to unscramble the GPS signal, the big benefit has been to increase accuracy from about 100 yards to just a few feet. It makes navigation devices more accurate. Before, when civilians got what was called selective availability, GPS knew more or less if you were on the highway; now it knows if you’re centered in your lane. It’s still not good enough for autonomous driving. But there are other benefits we’ll see before we see self-driving cars:
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