Switzerland. Canton Ticino. A photo reportage about the work during days and nights of the TPO police officers. 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 referred to by the initials of its German, French and Italian names, as SBB CFF FFS.