Dear Sir/ Madam, I am a train enthusiast that loves LUL Engineering Trains, and I dedicate a lot of my time to seeing them. I have seen staff accessing the non safety critical TrackerNet movement site, and said kind staff have aided me by showing me. I was hoping that I would be able to access it. My request is on how to access the site TrackerNet, and if not possible then the reasoning behind keeping it a private site, despite not being safety critical. Yours faithfully,

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Our ref: FOI-1089-1920/GH

Thank you for your request received by Transport for London (TfL) on 14 July 2019 asking for access to TrackerNet.

Your request has been considered under the requirements of the Freedom of Information Act 2000 and our information access policy. I can confirm that we do hold the information you require.

Trackernet contains secure information on all train positioning data beyond next passenger train information which is not publicly available for security reasons. The Trackernet application is hosted internally to TfL and in compliance with our Cyber Security Policy only accessible from within this secure domain.

TfL publishes all passenger train positioning data via the Open Data Policy and is used by a number of app providers for real time train information.

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

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