Dear Crossrail Limited, To help understand the depth of Train Describer (TD) data, published through the Network Rail Open Data platform, I request configuration files for the Train Describer covering the Crossrail COS signalling area (TD.net Area ID 'Q0'). Specifically, the scope of my request is limited to any files which define the following: - S-Class bit allocations, the definitions mapping bits to signalling identities. - TD berth stepping rules, the detailed definitions of what causes a description to step between berths. - TD berth layout block schematics. Please note I am not asking for any information relating to the LWOD line-wide overview display.

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TfL Ref: 2350-2021

Thank you for your request received by us on 16 February 2021 asking for information about the Crossrail network in relation to its Central Operating Section (COS).

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy.  I can confirm that we hold the information you require. You asked for:

configuration files for the Train Describer covering the Crossrail COS signalling area (TD.net Area ID 'Q0').

Specifically, the scope of my request is limited to any files which define the following:
- S-Class bit allocations, the definitions mapping bits to signalling identities.
- TD berth stepping rules, the detailed definitions of what causes a description to step between berths.
- TD berth layout block schematics.

Please find attached the requested information.

If you are considering submitting a further FOI request please think carefully about whether the request is essential at this current time, as answering FOI requests will require the use of limited resources and the attention of staff who could be supporting other essential activity. Where requests are made, please note that our response time may be impacted by the current situation.

If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.

Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.

Yours sincerely

 

Jasmine Howard
FOI Case Officer
FOI Case Management Team
General Counsel
Transport for London

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