Usefulness - The current international line between Turin and Modane is used at 30% of its actual capacity and the motorway is used at less than 50% capacity.
Traffic forecast - Up until now the traffic forecasts made by the project workers have turned out to be erroneous. They are based on the concept of infinite growth that says that for every extra point of GDP, there'll be a growth in traffic of 1.4 points. According to the estimates, the current line should be saturated already by this year. This has not happened. Growth still does not exist and goods transport decreases constantly and consequently the need for transport.
According to LTF {Lyon Turin Ferroviaire} the future line would find stability on its balance sheet with 40 million tons of transported goods a year. The current line can transport at least 20 million. Today 4.8 million are carried. Even by transferring all the goods currently transported on the motorways to the railways that would get to the utilization of the current railway of about 50% of its capacity.

Costs - Mauro Moretti , the CEO of Trenitalia has declared that the estimated cost of the line is 120 million per kilometre, that's 3 or 4 times more in relation to the average costs in France (see the article in "Il Sole 24 ore" on 13 January 2010). Furthermore, the estimated costs generally increase 2 to 3 times by the end of the work. Italy has also signed up to an economic agreement by which 65% of the international part would be charged to our country.