That's hard for humans to navigate, let alone self-driving cars. Besides driving very slowly, drivers will often estimate the lane position based on the shape o

That's hard for humans to navigate, let alone self-driving cars. Besides driving very slowly, drivers will often estimate the lane position based on the shape of the snow and the quantity/size of lanes and shoulder they expect. If the snow is not too deep, rumble strips [1] can be very helpful. [1]: https://en.wikipedia.org/wiki/Rumble_strip https://en.wikipedia.org/wiki/Rumble_strip