In Switzerland, the postbus system is known as Postauto in German, Car postal in French and Autopostale in Italian. Although the combination of mail and passenger transportation had been self-evident in the past, the needs of each diverged towards the end of the twentieth century, when the conveyance of parcels was progressively separated from public transportation. This was also so on private bus and rail lines. This division became official with the conversion of Swiss PostBus Ltd into an independent subsidiary of the Swiss Post. The company operates 798 bus lines with 1,995 buses in Switzerland, transporting over 100 million passengers annually on its 10,363 km long network.