Context and challenges

This client is a urban transportation operator for the Aix-Marseille-Provence metropolis (metro, bus, tramway).

This project focuses on the metro, of which the first rolling stock have been in operation since 1977. The rolling stock requires renovation, due to train wear and tear and necessary compliance with new standards for passenger accessibility. The renewal of rolling stock offered the opportunity to set up an automatic control system.

The client needed support for the replacement of rolling stock and the implementation of several technological innovations for the lines of the metro network.

The complexity of the project was greatly increased by the requirement to switch from a system with a conductor to a completely automated system and with no traffic interruption.

Assystem has been requested to carry out the industrial supervision project, working alongside the engineering firm.

Project scope

Assystem is working on a critical part of the project which includes the specifications for the Automatic Train Supervision System (ATS).

Assystem is providing:

  • Technical expertise for the Automatic Train Supervisor system and audio-visual facilities
  • Interface and configuration management
  • Electronic document management
  • Project management support


Existing rolling stock have been replaced and a CBTC (Communication-Based Train Control) system has been implemented to ensure operations without conductor. The new rolling stock was designed for:

  • Enabling rail operations on existing tracks and traction energy supply systems
  • Ensuring accessibility for People with Reduced Mobility (PRM) and accessibility to wheelchair users

The centralised control room (PCC) has been revamped and located at the Network Supervision Center. An emergency station has been set up to allow operations switching in case of evacuation or unavailability.

In figures

  • 28
  • 36
    rolling stock
  • 46,83 M
    passengers by year (2018)

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