The next stage in realistic snap track Superelevation is the term used to describe track in which one rail is higher than the other much like a banked curve on a freeway offramp or a high speed corner in NASCAR these banked curves are specially designed to reduce wheel wear & increase both comfort & safety in all manner of trains fast or slow passenger & freight These superelevated curves are a standard installation in modern railroads & before now they were complicated & finicky to replicate at model railroad scale level but no longer Kato UNITRACK makes it simple with modular easement & superelevated curves available with modern precast concrete ties which not only modernize the look of your rails but help differentiate the pieces at a glance from nonbanked track pieces Please note that all of these Concrete Tie Double Track pieces are 100 compatible with our regular double & single track Unitrack pieces & bridges & can be added into your existing Unitrack layouts br