The 2+1 roads mostly used to be 1+1 with no middle barrier, I believe. If you wanted to overtake a slower car, you had to time it well so you could use the oppo

The 2+1 roads mostly used to be 1+1 with no middle barrier, I believe. If you wanted to overtake a slower car, you had to time it well so you could use the opposite lane while it was (hopefully) empty of oncoming traffic. Or you'd hope the car in front, and the oncoming one were polite enough to move over to the curb. Some more winding roads had bad visibility, so you could never pass safely. I take the 2+1 any day. The newer 2+1 roads have cable barriers in the middle, so even a drunk or sleeping oncoming driver won't kill you. They just total their own car. https://en.wikipedia.org/wiki/Cable_barrier https://en.wikipedia.org/wiki/Cable_barrier Source: Being Swedish.