The routes considered shall be approx. 40-50 km long and, as far as the landscape characteristics and the mainly underground altitude profile (90% in tunnel, 10% in the open air) are concerned, the interferences with inhabited areas on the surface are very seldom. Also with respect to the landscape-environmental system, which is characterized by a high natural value, the structural features adopted help to solve any critical conflicts between the new infrastructure and the landscape.

The model used for the various solutions consists in supplementing the current historical line with the new single-track line, ensuring an operating performance of 120 trains a day. As to underground works, these include a main single-track tunnel and a safety gallery parallel to the main tunnel, for the safety of users. For both works, a shielded machine should be used.

The study and the analysis of the corridors are based on the assessment of all critical elements for a technical-economic definition of the routes (cost, time, length, impact on the territory, working capability and train performance), in order to reach the final comparison phase based on the 'Multi-criteria analysis': thanks to this tool it is possible to compare the various route options, taking into account different criteria so as to establish a ranking of the preference levels of each option and discover the most appropriate one, which in this case is the route Laveno-Vezia with an interconnection towards Luino (LU.VE.2).