The Wikipeda article is quite good. https://en.wikipedia.org/wiki/2%2B1_road#Sweden https://en.wikipedia.org/wiki/2%2B1_road#Sweden all the 2+1 roads in Swede

The Wikipeda article is quite good. https://en.wikipedia.org/wiki/2%2B1_road#Sweden https://en.wikipedia.org/wiki/2%2B1_road#Sweden all the 2+1 roads in Sweden have barriers.