We're upgrading the signalling around Cambridge, to improve efficiency and reliablilty for passengers and freight users

Signalling touch pad

Signalling systems are essential to the safe and efficient operation of the railway. With the demands to run more trains for freight as well as passengers, there is a need to modernise those signalling systems which are limiting the ability to operate the railway more efficiently.  

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

The signalling system being upgraded by the project covers 125 miles of track, stretching from Meldreth and Elsenham to the south, through central Cambridge, up to Ely to the north and Thurston to the east.

The project scope includes:

  • Upgrade of the signalling control equipment at Cambridge power signal box with state-of-the-art computer workstations to improve efficiency and operational capacity
  • Upgrade of the signalling safety interlocking equipment in the Cambridge area with a computer-based system for improved safety and reliability
  • Decommissioning of Bury St Edmunds, Dullingham and Chippenham Junction mechanical signal boxes and relocating control of signalling from these boxes to the enhanced facilities at Cambridge power signal box
  • Upgrade of Croxton, Dimmocks Cote, Waterbeach, Milton Fen, Dullingham, Six Mile Bottom and Meldreth Road level crossings to improve safety at these crossings
  • Upgrade of telecommunications and power supplies to support the new systems

Upon completion the project will have replaced around 690 signalling assets.

Network Rail has awarded the outline design contract for the upgrade to Alstom. This stage is expected to be completed in the last quarter of 2021. 

Subject to obtaining the necessary consents and design approvals, the detailed design and  delivery of the signalling upgrade could begin by end of 2021 and be complete around the end of 2024.

Contact us

For more information or to get in touch with us, please contact us by visiting our contact us page or by calling our 24-hour national helpline on 03457 11 41 41.

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