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Our areas of expertise

Design – Construction – Maintenance
The complementarity of our 12 areas of expertise has made us a rail specialist, but also a multi-skilled integrator able to delivery turnkey projects that cover infrastructures’ entire life cycle.
Civil engineering
Railway signalling
Low-voltage and telecoms
Infrastructure management
Distribution sub-stations
Railway safety
Overhead lines
Rolling stock maintenance
Electro-mechanical and safety equipment
 Our areas of expertise

System integration

  •  icon  Distribution sub-stations Distribution sub-stations
    Colas Rail is specialised in designing, installing and putting into service electrical installations such as EALE sub-stations, electrical distribution and powering auxiliaries.
  •  icon  Railway signalling Railway signalling
    Colas Rail designs control and communication systems to ensure traffic safety.
  •  icon  Tracks Tracks
    Colas Rail is the undisputed leader and specialist in high-speed lines in France and on international markets.
  •  icon  Electro-mechanical and safety equipment Electro-mechanical and safety equipment
    Colas Rail provides electro-mechanical safety systems: ventilation, smoke extraction, pumping, lighting emergency exits, mechanisation of escalators and lifts.
  •  icon  Low-voltage and telecoms Low-voltage and telecoms
    Colas Rail designs and builds low-voltage systems that transport Voice / Data / Image information via wired or wireless networks (radio, WI-FI, GSM…) and technical and audio-visual supervision systems for transport infrastructures.
  •  icon  Overhead lines Overhead lines
    Colas Rail designs and builds electrification systems (overhead lines, contact lines and third rail), meeting the most complex demands.
  •  icon  Infrastructure management Infrastructure management
    Colas Rail carries out comprehensive management services for railway infrastructures for private companies: multimodal platform management, upkeep, maintenance, railway operations, audits, and works.
  •  icon  Training Training
    Approved by EPSF (, CampusFER is Colas Rail’s training, evaluation and examining body. It offers a catalogue of some sixty training courses for everybody working in the railway sector.
  •  icon  Rolling stock maintenance Rolling stock maintenance
    Colas Rail offers rolling stock maintenance services for works and commercial trains for all companies in the sector.
  •  icon  Railway safety Railway safety
    Colas Rail brings together all the skills linked to the safety of work on the network, on closed lines and lines in operation: certification and safety warnings.
  •  icon  Freight Freight
    Colas Rail carries out railway transport services for goods and products (such as aggregates, oil, combined transport, minerals) in France, the UK and Poland.
  •  icon  Civil engineering Civil engineering
    Colas Rail conducts specific engineering work in tunnels (reinforcements, gauge adjustments, mining, etc.) and foundations.