When the tunnel called 'Ronco' was opened, 1.460m long, the section from Cossato towards Vallemosso was closed. The tunnels in this section of Pedemontana have all been installed with avant garde security systems and comply to the strictest safety standards.
Line 1 of the Turin Subway covers a route from Rivoli - Cascine Vica - Collegno - Porta Nuova - Lingotto - Piazza Bengasi which is roughly 28 km long. The trains use an automatic control system which allows them to operate without operators onboard and reduce waiting times, up to 69 seconds.
The Alifana Bassa Railway is based on the renovation, with modern infrastructures (new track, normal gauge, direct current electrical supply at 1500 V) of the old railway Alifana Napoli Piazza Carlo III. Line 1 (or 'collinare') of the Naples Subway was opened in 1993 and constitutes a most important and modern infrastructure for public transport in Naples.
The characteristics of the works are as follows: two independent separate carriageways, two lanes in each direction, no crossroads, tunnel about 1.600m long fitted with a vehicle exhaust fume treatment system, natural and artificial noise-proofing barriers, sliproads at intersections with urban road networks.