Request ID: FOI-1140-2223 Date published: 16 September 2022
You asked
Dear TfL,
I am requesting the current track code maps for the Sub Surface Lines (Circle, Metropolitan, Hammersmith & City and District). They are referenced in this TfL document (https://content.tfl.gov.uk/trackernet-data-services-guide-beta.pdf) on page 12.
We answered
Our ref: FOI-1140-2223/GH
Thank you for your request received by Transport for London (TfL) on 9 August 2022 asking for Track Code Maps.
Your request has been considered in accordance with the requirements of the Freedom of Information (FOI) Act and our information access policy.
We are refusing your request under section 14(1) of the Act, as we consider that providing the requested information would place an unreasonable burden on us. Our principal duty is to provide an effective transport service for London and we consider that answering this request would represent a disproportionate effort.
The publicly available Track Code is composed of several data elements that are combined to give a single value and there is currently no simple map showing these codes. The key track information is contained in technical drawings which would take considerable effort to collate and redact any confidential information.
If you would like to re-submit a more focused, specific request then we will, of course, consider it, however, we would also need to consider applying redactions under s38 of the Act.
If you are not satisfied with this response please see the attached information sheet for details of your right to appeal.
Yours sincerely
Graham Hurt FOI Case Officer FOI Case Management Team General Counsel Transport for London
