The deal includes preventative and corrective maintenance to resolve "specific issues" at train control centres, and with interlockings and train protection systems. The work will be carried out over 36 months, finishing in 2019.

Thales has been responsible for maintenance of the 491km Madrid - Seville and La Sagra - Toledo lines since 2005, and the 133km Cordoba - Malaga route since its completion in 2007. Equipment being maintained includes L90 interlockings, track circuits, point motors, axle counters, Asfa, LZB and ETCS Level 1 and 2 systems, hot axlebox detectors, cabling, and lineside structures.