Trains taken out of service that actually have a fault
Request ID: FOI-0193-1920
Date published: 07 May 2019
You asked
Could you tell me the percentage of trains taken out of service across the Tube network that, after checking, turn out not to have a fault at all and are simply returned to service? I would like these statistics for each line. If this request is too large then statistics for the Victoria line only
We answered
TfL Ref: FOI-0193-1920
Thank you for your request received by Transport for London (TfL) on 16th April 2019 asking for information about London Underground trains that are taken out of service.
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.
Specifically you asked:
“Could you tell me the percentage of trains taken out of service across the Tube network that, after checking, turn out not to have a fault at all and are simply returned to service? I would like these statistics for each line. If this request is too large then statistics for the Victoria line only.”
As we believe that to provide the information for the entire Tube network could only be achieved at disproportionate cost we are responding on the basis of the Victoria Line only, as advised in the second part of your request.
9.8% of Victoria Line trains taken out of service were found, after checking, not to have a fault. These trains were not necessarily returned to service immediately, but would have been available for service if required. This data relates to the latest year.
If this is not the information you are looking for 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,
David Wells
FOI Case Officer
FOI Case Management Team
General Counsel
Transport for London
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