Comment Re:There would be no need... (Score 1) 337
I'm not the poster above but I do have thoughts.
I live in sweden and sometimes we have something called snow. I've seen snow cover signs on both sides (and yeah the roads can still be clean so that normal speed is easy to keep safely). I can't read the signs, not sure how the car should be able to.
Then I'm curious about those day with snowstorms where everything is just white and you just drive slow enough and hope for the best almost feeling your way because you can't really see the road.
But sure, I can see the poles next to the road, so could the car and do calculations. I know the sign said 70km/h the day before and the car will probably just double check with a database for a known speed limit if the sign is covered in snow.
Interesting problem indeed.