Human reactions however, have not. Don't know where you live but most EU countries have a speed limit of around 100 km/h on the highway. This gives a stopping distance of around 100m for a modern well-maintained car (Which, let's be realistic, most are not). That's a long distance. Now if you take into account that a lot of countries have higher limits (France at 130 km/h for example) and that the braking distance increases exponentially I would disagree that they are outdated.

That's right. You should be driving well under the limit if it is foggy, icy or rainy or if you are in a poorly maintained car.

Sure. If you then take personal responsibility for every accident even when going at or below the speed limit, I could quite live with this. "Personal responsibility" of course means making good for any and all damage you caused, something which you are typically quite unable to do.

The fact that people still have "accidents" and that these "accidents" are ruled "accidents" and not "willfully crashing their 2 tons of metal into something" suggests that people are not ready to take responsibility for their actions and that they cannot be trusted, even with the current speed limits already in place.