Nickel silver track with gray roadbed; 1/card This is the basic turnout of the E-Z Track system with a turnout radius matching 18 Radius Curved Track. If you have enough room you may consider larger E-Z Track turnouts to allow for smoother transitions between tracks during switching operations and to accommodate locomotives and rolling stock with longer wheel bases. NOTE: All analog turnouts (non-DCC) require 16V AC or DC accessory power supply for operation.