Switzerland. Canton Ticino. Two police officers from TPO (Transport Police) are controlling the train tickets' validity of passengers travelling late at night on a TILO train between Lugano and Mendrisio.TPO (Transport Police) is the Swiss Federal Railways Police. Swiss Federal Railways (German: Schweizerische Bundesbahnen (SBB), French: Chemins de fer fédéraux suisses (CFF), Italian: Ferrovie federali svizzere (FFS)) is the national railway company of Switzerland. It is usually... more »