Cinque anni dopo la sua entrata in funzione, la società di trasporti BLS stila un bilancio positivo per il tunnel del Loetschberg: impianti e organizzazione funzionano bene e il traforo è fortemente utilizzato.
Il lato tecnico è così efficiente che solamente un treno ogni 1'000 riscontra problemi. Dal dicembre 2007, 158'000 treni (merci e passeggeri) hanno attraversato i 35 chilometri fra Frutigen (BE) e Raron (VS).
In totale sono rimasti fermi nel tunnel quattro convogli. In tre casi i passeggeri sono stati evacuati, mentre nel quarto il treno è stato trainato fuori.
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