You are driving down the road and your smartphone or vehicle alert system announces that black ice is 1.5 miles ahead. As you move closer there’s a countdown: 500 feet, 300 feet, and now urgently: Warning, Warning — 100 feet to black ice.

How can you know the location of black ice so precisely?

Weather systems will collect data from other vehicles on that same road. The vehicles will wirelessly transmit road condition and weather data. Vehicles’ data points will include barometric pressure, air temperature, windshield wiper settings, and vehicle stability control, or the amount of differential rotation between wheels indicating slippery conditions. There will be data about the amount of sun and headlight status, among other metrics.

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