Colas Rail is the leading company in the French market for railway construction and maintenance.

It is also a European and International leader in the design, construction and maintenance of rail and guided-transport infrastructure.
We play an active role in developing projects in the following areas: Permanent Way (slab track and ballasted), Electrification (sub-stations, overhead lines), Signalling, Control, Communications, Electrical and Power systems.
This allows for the perfect integration of a complex transport system. Our areas of competence cover all types of rail transport, from tramways to high-speed lines.