Summary of how countdown predicts bus arrival times
Dear Transport for London,
I was wondering if you could provide me information on how exactly the countdown system determines the arrival times for buses?
Yours faithfully,
Matthew Robinson
Dear Mr Robinson
TfL Ref: FOI-3064-1920
Thank you for your email received by Transport for London (TfL) on 8
January 2020.
Your request will be processed in accordance with the requirements of the
Freedom of Information Act and TfL’s information access policy.
A response will be sent to you by 6 February 2020.
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Yours sincerely
Eva Hextall
FOI Case Officer
FOI Case Management Team
General Counsel
Transport for London
Dear Mr Robinson
TfL Ref: FOI-3064-1920
Thank you for your email received by Transport for London (TfL) on 8
January 2020.
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 do hold the information you require. You asked:
I was wondering if you could provide me information on how exactly the
countdown system determines the arrival times for buses?
The Countdown system uses a combination of real time vehicle location
data, scheduled information, short term data (such as recent journey time
conditions) and long term historical information to calculate when a bus
is expected to arrive at a bus stop.
If this is not the information you are looking for, or if you are unable
to access it for some 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
Eva Hextall
FOI Case Officer
FOI Case Management Team
General Counsel
Transport for London
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