The story
The former services of CIT des Basses Laurentides, CIT de Deux-Montagnes, OMIT de St-Eustache and OMIT de St-Jérôme were amalgamated in 2004 to form the new Conseil Intermunicipal de Transport Laurentides with expanded service to some areas.
On June 1, 2017, a new law reorganizing public transit agencies in Greater Montreal abolished the CITs and established a new Réseau de transport métropolitain (RTM, later branded Exo), that, among other things, assumed the CITL's responsibilities, assets and employees.
On June 23, 2025, a first phase of a redesigned network was deployed for the northern part of the sector. The second phase of the redesigned network was deployed for the rest of the sector on November 10, 2025, to coincide with the opening of the Réseau express métropolitain.
From Wikipedia’s article on Exo Laurentides sector, shared under CC BY-SA 4.0.4