Global InformationCantono Frigerio system information
The Cantono Frigerio system was an Italian electric power supply for trackless trolleybuses with two wires about 20 inches (510 mm) apart being contacted by a four-wheeled collector on a single trolley pole. In English publications it was often described as Filovia system although the Italian term filovia means literally wire way, i.e. a trolleybus line or a trolleybus system.