Build your modern high-speed rail network with the latest additions to our snap-fit E-Z Track® system! Our new Concrete Tie Track with Nickel Silver Rails will look the part on any modern era mainline railroad from the BNSF Transcon to the Amtrak® Northeast Corridor. 22” radius curved track is best used to make relatively wide railroad curves. This track accommodates longer locomotives and rolling stock, and permits mainline operation at higher speeds. It can be placed on the outside of 18” radius curved E-Z Track® for double-track mainline realism. Four pieces of track make up one-quarter (90 degrees) of a 44” diameter circle (a full circle is 360 degrees).