Centralised network control streamlines rail traffic

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Centralised network control is a major innovation that is transforming our operating methods by simplifying and modernising how traffic is managed on the national rail network. The result: A system that meets top European standards and ensures smoother traffic for all.

A technological leap forward

SNCF Réseau manages train traffic across more than 28,000 km of track. Launched in 2011, our Centralised Network Control (CCR) programme aims to digitise and centralise traffic management via regional control towers. 

In the past, traffic was managed by signal operators working in 1,500 signal boxes distributed across the main network. With CCR, the oldest of these—using mechanical and electrical technologies—are gradually being replaced with computer-based systems that are remotely operated from regional towers. Teams are transitioning from manually setting points using mechanical levers to programming train routes digitally. Eventually, all signal boxes will be connected to regional centralised control centres. 

Before centralised network control

Train routes were managed by 1,500 signal boxes across the main network. 

After centralised network control

The data from these 1,500 signal boxes is now centralised through rail control centres. Since 2023, 11 CCRs have been operational, including the unified command centres in Saint-Denis, Vigneux-sur-Seine and Pantin, and the CCRs in Strasbourg, Bordeaux, Lyon, Dijon, Pagny-sur-Moselle, Rennes, Toulouse and Lille. 

A significant change for operations staff

Our traffic management teams are trained to operate everything from mechanical switch levers to state-of-the-art digital tools, giving them expertise across nearly a century of rail technology. With CCR, their role is evolving from a largely manual task to one supported by computer systems, allowing them to focus more on anticipating issues and managing disruptions. 

Improved network performance

The rollout of CCR brings multiple benefits,  all contributing to more efficient traffic management: 

  • Trains are better sequenced thanks to digital route programming
  • Teams can anticipate potential conflicts more easily by overseeing wider areas 
  • Remote monitoring allows for earlier detection of faults 
  • In the event of incidents, service can resume more quickly through better prioritisation of trains 
  • Staff coordination improves, as teams work in a single control room 

A vital step towards the mobility of tomorrow

The CCR programme is paving the way for further major developments.

  • Optimised traffic

    Better traffic management allows more trains to run safely on the network

  • Satisfied customers

    More frequent trains and better incident handling mean improved service quality

  • A unified system

    Traffic management modernisation also involves rolling out ERTMS, the European Rail Traffic Management System

  • Better passenger information

    The accuracy of data gathered by the CCR centres improves real-time passenger updates

  • New services

    CCR implementation enables the development of regional metropolitan express services

A move towards ERTMS

France’s rollout of CCR is comparable to the implementation of the European Rail Traffic Management System (ERTMS) across Europe. This single rail traffic management system will eventually replace the 27 different signalling systems currently in use across EU member states. 

Discover ERTMS

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