Micro Engineering Code 70 Ladder Track System Turnouts are part of a system of five different No. 5 turnouts allows you to make more compact yard ladders in a given space. The system includes curved diverging track turnouts, which allow a higher ladder track angle, several lapped turnouts and a standard No. 5 turnout. Code 70 Ladder Track System Turnouts feature nickel silver rail to represent the lighter rail used in yards, brown ties and cast-metal frogs.