A 3-lane highway is like 3 lanes in each direction though, isn't it? A 2+1 road has 3 lanes in total, and no central reservation (or just a fence), so it's less

A 3-lane highway is like 3 lanes in each direction though, isn't it? A 2+1 road has 3 lanes in total, and no central reservation (or just a fence), so it's less than half as wide.