Network Rail Awards Carstairs Junction Signalling Contract to Siemens Mobility

Siemens Mobility has been awarded the contract to deliver signalling works for the Carstairs remodelling project in Scotland.

Siemens Mobility engineer at work on a signalling project
Siemens Mobility engineer at work on a signalling project

Cairstairs is a major junction on the West Coast Main Line (WCML), where the lines from London Euston and Edinburgh to Glasgow Central merge. This remodelling is set to improve reliability, operational resilience and flexibility in the area.

The Siemens contract, valued at 50 million GBP (58.25m euros | 65.93m USD), includes the design, installation, testing and commissioning of the signalling works, and will see the company install its Trackguard WTS digital signalling technology in Scotland for the very first time.

This uses an IP-based network to connect objects to the interlockings and control centres, and will enable line speed to be increased through the junction. It will also enable the removal of a temporary speed restriction on the WCML.

Work has now begun on the detailed scheme design. Final commissioning is due to take place with a three-stage blockade between 23 April and 2 June 2023.

Rob Morris, Managing Director, Rail Infrastructure for Siemens Mobility, said:

“We're delighted to be working with our Scottish partners from Network Rail and our supply chain to improve this strategic part of the railway in Scotland. Coupled with our work with the train operators, we can also make sure that, when rolling stock is introduced in future, it’s able to take advantage of the higher line speeds.

“Our early involvement in the project has enabled us to work really closely with Network Rail and our delivery partners to develop a scheme that will provide the greatest benefit to the Scottish public.”

The Carstairs junction remodelling will also introduce a station bypass line, which will speed up journey times.

Space to hold longer freight trains of up to 775 metres in length will also be added, giving freight operators the ability to run a greater number of services.

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