AlpTransit San Gottardo SA ha usato un treno merci quasi senza fine per testare la messa in esercizio della nuova galleria di base del San Gottardo e per verificare, in particolare, se è possibile, in caso di emergenza, effettuare una retromarcia.
Il megaconvoglio, lungo 1'500 metri, era formato da tre locomotive e 76 vagoni. Le tre macchine erano posizionte, rispettivamente, in testa, al centro e in coda.
Red.MM/M.Ang.
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