Drafting and delivery of the construction project for the installation of Banked Automatic Blocking (BAB) on the Guadalajara – Ariza section of the Madrid – Barcelona line. This contract, the successor to the Atocha-Guadalajara project, includes the implementation of seven new EiS23 interlockings and nine object controllers. The EiS23 system will be implemented on more than 200 km of track on this section, representing a significant investment in modernisation and technology to improve the efficiency and safety of the line.