Digital Transformation of the ACCIONA Construction business. For his part, Fernández Rodríguez emphasiz-es “the electrification of catenary-free spans to reduce the use of diesel trains or layout design with energy efficiency criteria.” That is, fewer closed curves that require braking, and then greater consumption recovering speed. Devices that take advantage of the energy regenerated during brak-ing, correction equipment that returns it to the electrical network to recharge vehicles or consumption of the stations or automation with eco-driving function also help. GLOBAL MODEL But the infrastructure must be global —thus the value of the European goal as an exportable model— with the capacity to resist impacts such as climatic without losing basic function. The investment perspectives of the Development Banks, the interest of the investor community in sustainable projects and recovery funds play in its favor. Thus, the EU Transportation Commissioner, Adina Vălean, calls for public-private investment in infrastructure and con-tinuing the cooperation between sectors to drive the digital railroad. As Muñoz summarizes, “Only the railroad can establish itself as the spine of transportation in a multi-mode, sustainable and efficient con-text. But it can only be done with innovation and technology.” Railroad tunnel.