Tube delays - clarified from FOI-3822-1920
Request ID: FOI-0045-2021
Date published: 30 April 2020
You asked
1) Please can you clarify what you mean by ‘input variables’, ‘target variables’?
I am referring to any variables which TfL might use in determining why the tube delays happen. For example, are there temperature readings or precipitation readings from rainfall which TfL measure and then associate with specific categories of delays? I will also need the duration of each delay and the times they occurred.
2) Please also clarify whether you require information about all asset failures or is it just signals, and do you require all delays such as including Customer related ones?
I would like information about all asset failures and customer related ones too.
ORIGINAL REQUEST
All London tube delays from 2015-present categorized by input variable and target variable
I would like a full data list of the input variables that correspond to the cause factors such as "Signals - Links (inc. cables), Signals - Non Vital, Signals - Train Detection". This list must be from 2015 - present.
Please provide what the input of the causes are such as temperature inputs, weather inputs and also please provide the date and time they occurred, what tube line they occurred on and what the tube station is.
We answered
TfL Ref: FOI-0045-2021
Thank you for your clarified request received on 2 April 2020 asking for information about tube delays.
Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy. I can confirm we hold some of the information you require.
Please find attached a list of incidents, giving the date, time, type of incident, location and line of the incidents. For the ‘variables’, we do not hold that level of detail, however we have provided you with a copy of our guidance notes for the data headings used in the attached spreadsheet.
If this is not the information you are looking for, or if you are unable to access it for some reason, please feel free to contact me.
Please note, the Government has announced a series of measures to tackle the coronavirus. It is essential for London, and in particular for all critical workers, that we continue to provide a safe transport network that enables them to make the journeys they need to.
In current circumstances, we are not able to answer FOI requests readily and we ask that you please do not make a request to us at present.
Answering FOI requests will require the use of limited resources and the attention of staff who could be supporting other essential activity. In any event, please note that our response time will be affected by the current situation.
Please see the attached information sheet for details of your right to appeal.
Yours sincerely
Gemma Jacob
Senior FOI Case Officer
FOI Case Management Team
General Counsel
Transport for London
[email protected]
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