I'm curious how the self driving tests have worked in winter. From what I have seen they rely on road markings quite a bit. What happens if they are buried under snow, or if the snow ends up looking like a white road line? Driving in the winter often involves a lot of improvisation, particularly on narrow rutted streets. Can they tell a pedestrian in a white jacket from a snow pile? Do they drive slower when it is -25 and stopping distance is greatly increased?
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