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Cambridge re-signalling

We’re investing £194 million to renew the signalling system for the Cambridge area and improve efficiency and reliability for passengers and freight users

Signalling touch pad
Signalling touch pad

Signalling systems are essential to the safe and efficient operation of the railway. With the demands to run more trains, there is a need to modernise the existing signalling systems which are coming to the end of their operational life and replace them with a modern system that can unlock the ability to operate the railway more efficiently.

The Cambridge re-signalling, re-lock and re-control project (C3R) aims to deliver state-of-the-art signalling technology for the railway which means better reliability and reduced maintenance, while providing a platform ready for digital technologies such as the European Train Control System (ETCS).

The project scope includes:

  • An upgrade of the signalling control equipment at Cambridge power signal box
  • The upgrade of the signalling safety interlocking equipment with a modern signalling technology
  • The closure of three signal boxes and relocating control of the signalling to Cambridge power signal box
  • Upgrade of seven level crossings from half barrier to full barriers to improve safety for all crossing users
  • Renewal of the telecommunications and power supplies to support the new systems
  • Decommissioning of three mechanical signal boxes and relocating control of signalling to the Cambridge power signal box

Upon completion the project will have replaced almost 700 signalling assets across the area.

Latest News

In February 2022, Network Rail awarded a major design contract to Alstom for the renewal of the signalling system in the Cambridge area.

The £130 million contract awarded to Alstom is the largest single contract to be awarded by Network Rail under the Major Signalling Framework Agreement (MSFA) during the current five-year investment cycle.

The contract means that Alstom will deliver the complete renewal of the signalling system for the Cambridge area to replace the existing equipment which was installed in the early 1980s.

Design work has commenced, with the work on the ground expected to be delivered during four key commissioning stages to minimise disruption of the operational railway. The final commissioning of the new signalling system is scheduled for winter 2024.

Contact us 

If you have any questions about the proposals or the consultation, or would like to obtain hardcopies of the consultation brochure please contact us by email: 

Please follow us on Twitter @networkrailANG using the hashtag #CambridgeC3R. 

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