ad andrea79:
Your maps are super! But I see here only the map "trolleybuses in future" (it´s official? It´s very special that in Cagliari people want to extend the trolleybuses and tramways...)
Do you have the maps with history of trolleybus´s lines and with the present lines? Do you have date to this (opening/closing)? Then I can write the article not only about the tramway, but about the trolleybuses, too.