 These speeds were made possible by the line's 25 kV AC railway electrification system (rather than the traditional Italian use of 3 kV DC), and the new signaling, control and train protection system provided by the European Rail Traffic Management System/European Train Control System (ETCS).It was the first railway line in Italy to be electrified at 25 kV AC at 50 Hz and the first in the world to use ETCS Level 2 in normal rail operations.The first of the line was brought into service on 19 December 2005.