If the SmartSwitch system is used to operate PECO Electrofrog turnouts, the polarity of the frogs can be changed automatically, electronically and 100% reliably, when the servo moves the blades across, by adding a SmartFrog to each turnout. LEDs can be added to the SmartSwitch or SmartFrog to show the directional status of each servo-ideal for control panel route indicators or operating 2-aspect signalling.