Turin–Lyon high-speed railway
High-speed rail line under construction between Italy and France
Turin–Lyon high-speed railway
The Turin–Lyon high-speed railway is an international rail line under construction between the cities of Turin and Lyon which will link the Italian and French high-speed rail networks. It will be 270 km (170 mi) long, of which over 100 km (62 mi) will be tunnelled. The core of the project is its 70-kilometre-long (43 mi) international section, which will cross the Alps through the Mont d'Ambin Base Tunnel between the Susa Valley in Piedmont and Maurienne in Savoie. The total cost of the line was estimated in 2016 to €25 billion, of which €8 billion was for the international section. The latter was updated to €11 billion in 2024 once most contracts were signed, with some of the cost increase stemming from replacing the initially planned single-tube design by a double-tube design required by new stricter safety regulations. Like the Swiss NRLA project, the line has twin aims of transferring freight traffic across the Alps from trucks to rail to reduce CO2 emissions and local air pollution...
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