Colas Rail initially set up in Morocco in response to the lines 01 & 02 project of the Rabat-Salé tram line. The local railway market was promising at the time, particularly the numerous projects launched by the Moroccan national rail office (ONCF). Colas Rail took this opportunity and decided to create a subsidiary in Morocco, obtaining more than three tenders and making ONCF its main client.

Operating for more than 10 years in the Moroccan railway sector, Colas Rail Morocco has expanded the scope of its operations spectacularly on the basis of its capacity to carry out complex turnkey projects, providing solutions with integrated methodologies for projects with multiple lots involving multiple business lines, such as tram lines, high-speed lines, substations and laying shipping lanes. Throughout this period, Colas Rail Morocco has positioned itself as a leader in the sector by providing its customers with high-level expertise and fulfilling its commitments.

• 1987: Inauguration of line 1 (33 stations, 44 km), 2 million passengers/day.
• 2005: Inauguration of line 2, (14 stations, 14 km), 1.76 million passengers/day.
• 2001: Inauguration of the el Azhar Tunnel (smoke extraction and SCADA over 2.8 km).
• 2012 and 2014: Inaugurations of phases 1 and 2 of line 3 (33 stations, 40 km), 2 million passengers/day.
• 19 February, 19 June and 19 October: inauguration of New El Marg Line 3 Phase 4 A-1 and Heliopolis Station.