I treni che da dicembre utilizzeranno la Galleria di base del San Gottardo dovranno andare meno veloci del previsto. In base ai test effettuati, la resistenza dell’aria imporrebbe una riduzione a 160-180 chilometri orari rispetto ai 200 previsti dalle FFS.
Lo scrive la NZZ am Sonntag che ha raccolto informazioni presso le FFS le quali però non vogliono prendere posizione. Rispetto alla Galleria di base del Lötschberg, i due tunnel del San Gottardo sono più stretti e l’aria ha meno spazio per espandersi.
Non è noto se ciò avrà conseguenze sul numero di convogli previsti che potranno transitare. Entro dicembre altri test permetteranno di stabilire la nuova velocità massima consentita. Essa è (teoricamente) fissata a 249 km/h. I treni merci procederanno tra 100 e 140 km/h. La galleria sarà aperta al traffico l’11 dicembre 2016 con il cambiamento d’orario.
Ats/mas
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