Final answer:
The Frejus tunnel connects traffic from Modane, France to the Piedmont region of Italy.
Step-by-step explanation:
The Frejus tunnel connects traffic from Modane, France to the Piedmont region of Italy. The tunnel is located in the Alps and is used as a transportation route for vehicles and trains. It is considered an important connection between France and Italy, providing a direct link for trade and travel between the two countries.