How self-driving cars perform in fog
In San Francisco, fog is something that happens quite often. In fact, according to the National Oceanic and Atmospheric Administration (NOAA) there is a one-third chance a person will see clouds and fog in the forecast.
Waymo, the autonomous driving wing of Google, has been operating in San Francisco since August with part of the goal in mind to see how the technology operates in foggy conditions.
https://electronics360.globalspec.com/article/17435/how-self-driving-cars-perform-in-fog