DB International will be responsible for reviewing the design of the track, signalling and telecommunications for the 320km/h line. It will also provide technical assistance for the construction of the control centre and the electrification equipment, as well as for the operation and maintenance of the new line.

In addition, DB International will review the design and supervise manufacture of the fleet of Talgo high-speed trains. In order to do so, DB International says it will implement a stringent quality control system.