Our ref: FOI-0759-1718/GH
Thank you for your request received by Transport for London (TfL) on 27 June 2017 asking for information about average speed cameras.
Your request has been considered under the requirements of the Freedom of Information Act 2000 and our information access policy.
Unfortunately we do not hold the information you require. You will need to approach the Metropolitan Police to request these measurements, as they hold the system calibration 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